What does it mean when your speedometer is not working?

If cruise control is working, and the check engine light is on, it may indicate a problem with the speedometer itself, and may require a change of the instrument panel. A ‘check engine’ light is a serious issue on its own and must be checked immediately.

How do you replace the speedometer cable in a car?

~ Once you have removed the old cable from your car, you need to replace it with a new one. In the adapter, fix the square end of the new cable and also tighten the nut on the rotating shaft. ~ Now, pass the new cable through the passage and tighten the bolt at its rear end. This end should be fixed at the speedometer’s square hold.

Why is my speedometer tripping on my Harley?

It sounds like a circuit breaker is tripping either because of a bad speedo head unit or because of age. Start by replacing the breaker with a new h/d one.

What happens if your speed sensor is bad?

Another symptom of a bad speed sensor is sluggish automatic transmission shifting. The vehicle’s computer also uses the speed sensor signal to control emissions and cruise control. Replacing the VSS in this 1992 Ford Ranger made quite a difference in its get up an go. Loading…

If the oil pressure, coolant, charge, or gas gauge doesn’t work or works erratically, the problem is in the gauge, wiring, or sender. Speedometers are unique in that some of them use physical cables instead of sensors, so a speedometer not working can also indicate a broken cable or stripped gear.

How are speedometers different from the other gauges?

While all gauges can be either analog or digital, speedometers are unique in that they can have either mechanical or electrical inputs. All other dash gauges are connected to sensors or sending units via wires, while your speedometer may utilize either a speed sensor or a physical cable.

How is the speedometer connected to the dash?

All other dash gauges are connected to sensors or sending units via wires, while your speedometer may utilize either a speed sensor or a physical cable. In vehicles that use cables, the speedometer is physically coupled to the transmission via a cable. The cable is usually square on both ends or square on one end and slotted on the other.

Why does my coolant temperature gauge read Cold?

Using your coolant temperature gauge as an example, the diagnostic procedure involves locating and disconnecting the sending unit. With the ignition on, the gauge should register cold. If you connect the sending unit wire to ground, the gauge should switch to read hot. If the gauge moves as expected, then you can suspect a bad sending unit.

Where is the temp sensor on a Chevy Venture?

Some thermostats can be put in upside down, so pay attention to the arrows on the thermostat. The water should flow from the engine towards the radiator. The temp sensor I think is in the rear passenger side of the engine on top.

What causes temperature fluctuations in a Chevy Venture?

The most likely cause of a temperature fluctuations is either a flauty temperature sending unit , air in cooling system or a defectective cooling fan . If the engine temperature is stable when driving at highway speed and temperature rises when idling or in traffic , the fan is the cause .

Why is the thermostat on my Chevy Venture not working?

Pam, your problem seems similar to the original question. If the engine’s temperature will not stabilize around 160° to 180°, regardless of whether you are moving or not, this usually is caused by a stuck open thermostat, or a thermostat that was replaced incorrectly.

How can I tell if my Chevy Venture has a cold engine?

One check you can do without unbolting anything, (ONLY DO THIS WITH A COLD ENGINE) is to remove the radiator cap, make sure the radiator is completely full, start your COLD engine and see if the water in the radiator begins to move immediately. I CANT STRESS ENOUGH TO ONLY DO THIS WITH A COLD ENGINE!

Why are all of the gauges in my car not working?

There are a lot of different types of instrument cluster designs and configurations, but when all of the gauges in a car stop working at once, the problem is usually either a fuse or wiring problem. The first step in diagnosing this type of issue is to identify the fuse associated with the instrument cluster or gauges.

How to diagnose a fuel gauge easy not in the book?

How To Diagnose a Fuel Gauge Easy Not in the Book Tricks! If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer.

What happens when your gas gauge is not working?

The gas gauge tells you how much fuel is in your gas tank and alerts you when it’s time to refuel. If your gas gauge is not working, the inaccurate information it provides may cause you to run out of gas unexpectedly.

How does a fuel pump work on a gas gauge?

The fuel pump module includes the fuel sending unit, used by the gas gauge to detect and display fuel level. https://www.flickr.com/photos/3ndymion/33556245572. The gas gauge is a relatively simple circuit, but its simplicity means each component is essential to its function.

Why does my car gauge read cold when I Turn on the ignition?

With the ignition on, the gauge should register cold. If you connect the sending unit wire to ground, the gauge should switch to read hot. If the gauge moves as expected, then you can suspect a bad sending unit. If the gauge doesn’t move when you ground out the sensor wire, then you can suspect a bad gauge.

How does an oil pressure gauge work and how does it work?

The current passes through a wire-wound coil mounted around or within the needle’s pivot and produces a magnetic field that moves the needle across the calibrated scale of the gauge. How far across the scale the needle goes – what reading it gives – depends on how much current flows through the gauge.

Is there a warning light on the oil gauge?

Oil warning lights Many cars do not have an oil pressure gauge fitted as standard, but because some indication of low oil pressure (especially zero reading) is so important, they will at least have a red or orange warning light that shines if the oil pressure drops below a certain level.

Is the oil pressure gauge electric or gas?

Electric gauges have the advantage of being easy to integrate into a modern dash design. The oil pressure gauge is one of the most important instruments in a car.

What do you need to know about Bob’s speedometer?

The speedometer and odometer were rebuilt to make them like new. The Battery, Gasoline, Oil Pressure and Temperature gauges were retrofitted with all new modern gauges. Last but not least, we added customized LED turn signal indicators. That’s how we do things at Bob’s Speedometer!

Why is the gas gauge not working right?

Why is the Gas Gauge in My Chevy Truck Not Working Right? 1 Known Problems. The most common problem with the fuel gauge reported by Chevy truck owners is a complete failure to register the fuel level. 2 Causes. Over time, gasoline corrodes the fuel gauge sensor. 3 Solution. Disconnect the battery for 10 to 15 minutes. …

Can a car be reset with a broken speedometer?

In the past, most mechanics ended up having to replace the speedometer head when a vehicle came in with a broken speedometer. Nowadays, there’s a possible reset procedure that can be used, and it can be done by most car owners right at home.

Are there any GPS speedometers left in stock?

Only 1 left in stock – order soon. . Only 9 left in stock – order soon. . Only 6 left in stock – order soon. . Only 4 left in stock – order soon. . Only 9 left in stock – order soon.

What does it mean when gauges in your car stop working?

But when the gauges in your car stop working, it’s not a situation you can safely ignore. When one gauge stops working, the problem may be in the gauge itself or a bad sensor, while all the gauges cutting out at the same time often indicates a blown fuse or a defective instrument cluster.

What to do if your coolant gauge is not working?

Why is my speedometer, rpm gauge and fuel gauge not working?

Q: My speedometer, rpm gauge and fuel gauge are not working; possible gear slipping and high rpm. I recently had a used motor put in my vehicle about 6 months ago when there was an oil build up which is commin in this engine i guess, and a new starter about 6 weeks ago.

When did my speedometer and RMP gauge work?

This morning forvthe first time my speedometer and rmp gauge was working. My speedometer would read 0 and sometimes jump around and twice for about a minute actually work. My rpm gaugevran unusally higher then usual (which i could also hear my engine working harder then usual.

A speed sensor that has failed may stop the speedometer from working. You may also notice that your vehicle is not running smoothly and you are not able to use the vehicle’s cruise control. When speed sensors fail, they will typically cause the Check Engine light to come on, indicating that there is an issue.

What happens when a speed sensor stops working?

A speed sensor does not only indicate the vehicle speed but also help with cruise control operation and regulation of the fuel’s flowing and ignition timing. A speedometer may stop working due to a bad sensor.

What causes a Mazda 3 speedometer to stop working?

When speed sensors fail, they will typically cause the Check Engine light to come on, indicating that there is an issue. Faulty Fuse/Bad Wiring : In very wet conditions, it is possible for exposed wires to get wet and short out, causing a fuse to blow. When the fuse for your speedometer stops working, it can cause the speedometer to drop to zero.

Where is the speedometer located on a car?

Where is the speedometer sensor located? The speedometer sensor is located in the transmission of your vehicle and is designed to register the driveshaft’s rotational speed. The sensor delivers this information through the speedometer cable and to the vehicle’s computer, which converts electrical pulses into a numerical speed.

What does it mean when your speedometer doesn’t work?

Speedometer doesn’t work and transmission doesn’t shift gears. The speedometer stays at 0 all the time. When the transmission is in drive it won’t come out of 1st gear. Reverse works fine, and if I manually put the transmission in 1st or 2nd it works fine. 85 people found this helpful.

Why is my speedometer not working on my Chevy Trailblazer?

Your Chevrolet’s speedometer gives important readings about your current speed. If you are experiencing problems with yours, don’t fret — these issues are common and easily fixed (usually). In fact, TrailBlazer speedometer problems are one of the most common topics discussed on popular Chevy online forums.

Do you need to replace the speedometer dial?

Not every speedometer related problem needs a replacement job. It depends on the cause. In case the dial is the problem, you can easily replace the dial alone. Problems with the inbuilt computer will require replacement.

How to fix a speedometer gauge in your car?

How to fix speedometer problems in your car by replacing the speed sensor. Speed sensor location, inspection, removal and repair. DIY car repair with Scotty Kilmer, an auto mechanic for the last 44 years. 1. Actron Scan Tool: http://amzn.to/2ngeCQJ 2. Screwdriver set: http://amzn.to/2jaHIfP 3. Ratchet and socket set: http://amzn.to/2inoxOY 4.

What happens if a speed sensor is broken?

Broken Speed Sensor : A speed sensor has many purposes including indicating the speed of the vehicle, regulating flow of fuel and ignition timing, and operating the cruise control. A speed sensor that has failed may stop the speedometer from working.

Why is my speedometer not working?

Another reason for the car speedometer not working is a bad wire. The wires can short out for many reasons, causing the fuse to blow out and stopping the operation of the speedometer. It mainly happens in older cars.

What would cause a speedometer to stop working?

What Causes The Speedometer To Stop Working? Malfunctioning Speed Sensor. A speed sensor does not only indicate the vehicle speed but also help with cruise control operation and regulation of the fuel’s flowing and ignition timing. Issues with the ECU. The Engine Control Unit (ECU) is literally the hub of engine activities – acting as the car’s computer brain. Defective Wiring and/or Fuse.

How can I Fix my speedometer?

How to Fix the Speedometer on a Moped. Remove the moped’s negative battery cable with an adjustable wrench. Open the fuse box and replace the instrument cluster’s fuse if the speedometer, gas gauge and other gauges on the cluster aren’t working. The location and amperage of the fuse will be clearly marked.

Why would the speedometer and odometer stop working?

If both your odometer and speedometer are not working, then it’s likely your speed sensor needs to be replaced. These are easily installed and located near the back of your transmission. If only your odometer is busted, then it’s likely the gears that turn the odometer have broken.

What should I do if my gauges are not working?

The first step in diagnosing this type of issue is to identify the fuse associated with the instrument cluster or gauges. The fuse should have power on both sides when the ignition key is turned to the on position.

What is causing the speedometer not to work?

What causes my speedometer not to work?

There are several common causes for a speedometer to stop working. Typically, these malfunctions are caused by, a broken gear in the speedometer system, a speed sensor issue or a faulty engine control unit (ECU).

Why is my Cavalier speedometer not working?

While there are a variety of reasons your Chevrolet Cavalier speedometer is not working, the most common 3 are the vehicle speed sensor (VSS), a faulty speedometer, or an electrical issue. Due to the nature of electrical systems on modern vehicles, the range of problems these can cause are nearly limitless.

Why is the RPM gauge not working?

If you are getting erratic readings, this can be a sign of bad wiring. Another potential problem is calibration issues. If you notice the RPM readings do not coincide with the motor, then it may be time to have the mechanic look at the vehicle. By doing so, they can diagnose any problems that are going on.

How do you wire a new speedometer gauge?

First off your new gauge will have a wire going from A on the gas gauge to A on the temperature gauge. Remove that. We will wire these gauges separately now. Second, go to Radio Shack or order resistors online.

Why does my CJ7 speedometer gauge keep pegging?

The resistors dropped the voltage down to about six volts for the gauges. When the gauges keep pegging all the way to the top its because their resistors are blown on the original ones. On the new gauges the problem is that THEY HAVE NO RESISTORS.

Where is the speedometer sensor on a car?

The speedometer sensor is located inside the transmission and attached to a driveshaft, which impacts multiple functions of the car. Due to this fact, it’s possible that the Check Engine Light will light up on the dashboard if a sensor problem is discovered by the vehicle’s CPU.

How to diagnose service engine light for free?

Check engine light on? Here is how to use an OBD-II scanner for free to diagnose the service engine light & save money vs a mechanic fee. Menu Home About About Contact Categories Investing Banks CDs Dividends ETFs Finance Guru Commentary Index Funds Inflation Market Terminology Mutual Funds Stocks Wall Street News Lifestyle Finance Biking Donating

Why is my Check Engine light not working?

A ‘check engine’ light is a serious issue on its own and must be checked immediately. In cases where the speedometer does not settle on any particular reading but keeps moving between speeds, it is almost always due to bad wiring, in case of a cable system, or a faulty speed sensor.

Why is my speedometer stuck on my GM Silverado?

This section will outline all the most common problems that have been identified. The most common instrument cluster problem seen on the 03-06 GMs is faulty analog gauges. This is usually the first gauge problem the vehicle owner sees and is experienced as a stuck, sticky or jumpy gauge needle.

What kind of display does a GM speedometer have?

Most GM gauge clusters of this time frame have two digital displays – the odometer and the gear indicator (commonly called the PRNDL screen). Either one or both screen will typically be affected. This common issue is not actually a problem with the digital displays themselves as they seem to be quite reliable. 1. Dim, Dark or Dead Display

Are there any problems with the GM gauge clusters?

The next most common problem seen on GM instrument clusters are failing digital displays. This problem is unrelated to the stepper motor problem but is often seen in the same clusters. Most GM gauge clusters of this time frame have two digital displays – the odometer and the gear indicator (commonly called the PRNDL screen).

Why is my speedometer reading higher than normal?

In some cases the needle will “peg out” to the fully counter clock wise or clock wise position. In some cases the needle will move smoothly but will be reading noticeably higher or lower than normal at all points. This problem typically starts with just one gauge but over time all the analog gauges will start displaying the same symptoms.

How does the speedometer and odometer work?

This is likely related to what is called a speed input/output shaft sensor which is a sensor mounted down on the transmission that monitors the speed of the output shaft of the transmission. This is relayed to your ECU which produces this information in your speedometer and odometer.

Why is the cruise control on my car not working?

Common Causes of Cruise Control Not Working. 1) Cruise Control Switch; 2) Brake Light Switch; 3) Blown Fuse; 4) Check Engine Warning Light; 5) Vehicle Speed Sensor; 6) Electrical Issues

How does a cruise control module detect speed?

The only way your cruise control module is going to know how fast the vehicle is moving is if the vehicle speed sensors feed this information to it. If the module cannot detect the speed because of faulty speed sensors, then the cruise control system will automatically deactivate.

What happens when the speedometer on a Honda CRV stops working?

One of the most inconvenient things that can happen to your CR-V is when the speedometer stops working. You don’t really realize how much you look at the thing until it’s just always sitting at 0 MPH while driving down the road.

What to do if your speedometer doesn’t work?

Replacing the bad speed sensor will solve this issue. Also, if speedometer in your Chevy stops working or reads erratically, test the cruise control out. The cruise control uses the same sensors as your speedometer. If the cruise is working and the check engine light is on, the problem is likely with the speedometer itself.

Common Causes of Cruise Control Not Working. 1) Cruise Control Switch; 2) Brake Light Switch; 3) Blown Fuse; 4) Check Engine Warning Light; 5) Vehicle Speed Sensor; 6) Electrical Issues

Can a brake light disengage cruise control?

Brake Light Switch – As cruise control is automatically cancelled by depressing the brake, some vehicles may disengage cruise control if it cannot detect the brake light switch. Brake Lights – In some systems, cruise control is disabled when a brake light is blown.

Why does the CJ gauge read higher with higher oil pressure?

The higher the fuel level or engine oil pressure, the lower the resistance. With less resistance, more current flows and the gauge reads higher. The oil pressure sender and fuel sender are both electro-mechanical devices but the temperature sender is not.

Are there warning lights on the speedhut gauge?

External Programming Button and External Warning light can be used with many of the gauges (including Tachometers) available in the Legacy Gauge Line. This is Speedhut’s introductory line. No shift lights or warning lights.

What to do if your gauges are not working?

Batteries in a vehicle usually last about 2 to 3 years without having any issues. If you need further assistance with your gauges not working properly, then seek out a professional, such as one from Your Mechanic, to help you. For the jerking feeling when shifting, check the transmission fluid and see if it’s full and red in color.

Why is the temperature gauge on my trailblazer not working?

My question is to Ken the Administrator. In a previous blog about 2008 Trailblazer with a temperature gauge intermittently not working and setting code 128, you stated that it traces back to the BCM. Could you kindly explain how the BCM controls this?

Why does the temperature gauge on my AC not work?

The temperature gauge dropping should not matter to the AC system as it only cares that the coolant temperature is below 253 degrees. However it could be a symptom of the problem.

Why does my car speedometer make a squeaky sound?

In fact, counting the number of teeth on the gear and knowing its color are helpful in diagnosing speedometer calibration issues . One of the most annoying speedometer problems is squeaky operation. A high-pitched sound is generated by the metal core rubbing inside of the cable sheath.

What happens if your speedometer does not work?

If the speedometer sensor is not working properly, the speedometer will be inaccurate; potentially leading to speeding tickets or unsafe driving situations. The symptoms noted below will give you an indication that a problem exists with your speedometer sensor: 1. Speedometer does not work

Is there a way to reset the speedometer?

See the simple reset solution in the video below, demonstrated on a 2002 Chrysler Sebring. Other make and models may have a similar solution. Want to master Microsoft Excel and take your work-from-home job prospects to the next level?

How to fix a speedometer on a Harley Davidson?

FMH Reply: Michael, check out your ECM plug. Disconnect it from the ECM and blow it out with compressed air. Reassemble with electric grease. You should also do the same with your TSSM (turn signal security module) and its plug. You did not mention any modifications to this m/c. That info is usually helpful. Reply: Thanks you.

What should the speedometer read at 70 mph?

When traveling at a true 70 mph, as indicated by our highly precise Datron optical fifth-wheel equipment, the average speedometer (based on more than 200 road-tested vehicles) reads 71.37 mph. Wait, wait! Before you roll your eyes and turn the page, let us dig just a bit deeper and reveal some dirt.

Why does my speedometer keep going back to zero?

If the speedometer is acting like this then most of the time this is caused by a failure in the vehicle speed sensor. When this sensor or the connection at the sensor fails then this will happen.

Can a speedometer be off on a European Car?

No matter what make and model you drive, your speedometer is definitely off. Case in point, at highway speeds it will almost always show a faster rate than you’re actually traveling. And if your car’s European, the problem’s even worse.

What makes a car go faster than the speedometer?

Some tires will be slightly larger in circumference and under state milage while other tires will be slightly smaller and over state milage. Typically the adjustment is +/- 1%. Of course, as the tires begin to wear down, the factor changes. As I remember, the older VWs (60s, 70s, & 80s) typically registered faster than actual speed.

Why is my speed ODM gauge not working?

The cause of problem: bad connection under fuse box going to hazard circuit. The connection plug pins had some corrosion on them. This allowed voltage to travel through that circuit but not enough current.

What to do when your odometer is not working?

When the key is in the ON position with the engine not running, the MIL will remain illuminated for regulatory purposes. With the ignition switch in the OFF position, depress the TRIP ODOMETER RESET button.

Where does the noise from the speedometer come from?

The noise is also associated with the speedometer needle jumping around erratically as we explained above. The noises typically come from the dashboard of your vehicle, specifically where the speedometer is located. However, they might also come from the other source of attachment, the transmission under your car.

Is there a way to replace the speedometer cable?

Replacing the speedometer cable is one option, but there are two methods for lubricating the old cable that’s worth it to try first. For one method, they make a special speedometer cable lubricant that’s installed where the cable attaches to the speedometer head.

Why does my speedometer make a high pitched noise?

A high-pitched sound is generated by the metal core rubbing inside of the cable sheath. A speedometer head can also generate noise, which also spins along at the same speed. If you disconnect the cable from a speedometer head and it still makes noise, then you have just isolated the problem as the cable itself.

What happens to the speedometer on a Chevy Silverado?

Has the speedometer on your Chevy Silverado stopped telling you your actual speed? Does it get to zero and get stuck, then suddenly tell you you’re going 80 when you know you’re only going 20?

Where was the speedometer before the speed gun?

Before the invention of the speed gun, cars in the early 20th century were required to have two speedometers, one on the dashboard and one on the front fender, so that police could see how fast they were going! A speedometer is an instrument which provides the driver with instantaneous readings of speed.

How does the speedometer work in a car?

Today’s cars and trucks have electronic fuel injection, which is controlled by the onboard computer. The EFI supplies fuel to the engine based on input from multiple sensors; one of which is the speedometer sensor.

Why is my speedometer not working on my Chevy Equinox?

If your Chevy Equinox’s speedometer is not working, it’s usually going to be caused by an issue with the VSS (vehicle speed sensor), or a bad ECU. The VSS is usually not very expensive, and they are not that difficult to replace.

How to troubleshoot Cat diesel engine low power?

Cat Diesel Engine Low Power Troubleshooting. – YouTube Cat Diesel Engine Low Power Troubleshooting. If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations.

What are the symptoms of a bad speedometer sensor?

Symptoms of a Bad or Failing Speedometer Sensor. Cost of Replacing a Bad or Failing Speedometer Sensor. Common signs include the speedometer not working, cruise control not engaging, Check Engine Light coming on, and loss of power.

Where do I find reduced engine power message?

If you’ve got the owner’s manual to your GM vehicle (Chevy, Buick, etc.) handy, you can flip to the section about the driver information center (or instrument cluster). There, you’ll find a general overview of what the Engine Power Reduced message means for your particular year and model.

Where are the terminals on an Autometer voltmeter?

On the back of many AutoMeter voltmeters, there are three terminals. These are identified with the letters “S”, “I”, and “GND”. Of these three terminals, only two are used. Connect the “GND” terminal to a common chassis ground, and connect the “I” terminal to a key-on power supply.

What should I do if my gauges quit working?

The alt wasn’t charging. No tac and no speedometer. The Lights work fine, The odometer is still rollin over, cruise control works, Gear selection indicator read out works fine.. Any ideas? I haven’t dug too far yet, I didn’t have time today (monday) but I have Tuesday off so i was gonna start snooping around.

What does the p0500 code on the speed sensor mean?

What the P0500 code means The P0500 diagnostic trouble code tells us there is a fault found with the vehicle speed sensor. The speed sensor is monitored by the ECU and when it fails to operate properly the P0500 code is set. Once the code is set, the Check Engine Light will illuminate on the dashboard.

What is the diagnostic code for speed sensor malfunction?

P0500 is a diagnostic trouble code (DTC) for “Vehicle Speed Sensor Malfunction”. This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $0.0 .

How much does it cost to diagnose a p0128 code?

The cost to diagnose the P0128 code is 1.0 hour of labor. The auto repair’s diagnosis time and labor rates vary by location, vehicle’s make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.

What does the p0128 Jeep engine code mean?

If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem. What does this mean? The cost of diagnosing the P0128 JEEP code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city.

What to do if your thermostat says p0128?

Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins. If cooling system is not leaking and the fluid level is OK, replacing the thermostat usually takes care of the problem. What does this mean? The cost of diagnosing the P0128 JEEP code is 1.0 hour of labor.

What would cause my speedometer to just stop working?

Why does the speedometer stop working sometimes?

Defective Wiring and/or Fuse. Another reason for the car speedometer not working is a bad wire . The wires can short out for many reasons, causing the fuse to blow out and stopping the operation of the speedometer. It mainly happens in older cars.

What caused my car engine to stop while driving?

Top 6 Causes When a Car Turns Off While Driving Engine Overheating. The most common reason for an engine to stop is that it is overheated. Low Engine Oil. Since oil is what keeps all moving metal components in an engine lubricated to keep them running with the least amount of resistance, a lack of Low Transmission Fluid. Failed Motor Mount. Electrical Problems. Bad Catalytic Converter.

How does my speedometer work?

Electronic speedometers work in a completely different way. Small magnets attached to the car’s rotating drive shaft sweep past tiny magnetic sensors (either reed switches or Hall-effect sensors) positioned nearby. Each time the magnets pass the sensors, they generate a brief pulse of electric current.

What should I do about my Rev speed meter?

●Never pull hard on any vehicle or product harnesses. Failure to do so may lead to electrical shorts and faulty connections. ●Be sure that all connectors have been securely locked into place. Also, be sure to loosen any bolts that secure the connector when removing. Failure to do so may cause damage to the connector.

How does the speedometer on a boat work?

The change in air pressure is measured by a gauge at the end of the tube on your dashboard. This in turn is able to estimate the boat’s speed. To put it simply, the speed of the water entering the pitot tube is compared to the air pressure. This is what produces the speed estimate for the boat.

Are there any problems with the speedometer on a vintage car?

Fortunately, problems with mechanically operated speedometers can often be resolved with a little effort. Here we’ll talk about how they work and common problems on vintage automobiles.

Where does the signal come from on a speedometer?

A signal originates from a driven gear that meshes with the transmission tail shaft. This set up rotates a flexible metal core inside of a speedometer cable, which in turn, connects to the back of the speedometer head mounted in the instrument cluster . The faster the tail shaft spins the higher the reading on the dashboard.

What to do if your dash light does not work?

#Test the dashboard light bulbs. If the fuses are working properly, check for a blown bulb in the dashboard. Following the manufacturer’s instructions, disconnect the battery while working on the dash, remove the faceplate covering your vehicle’s dashboard gauge panel. Remove the screws holding the plate on. Carefully remove the faceplate.

What to do if your dashboard light goes off?

The dimmer switch may have been pressed by accident or adjusted by another driver of the vehicle causing the dashboard lights to become dull or switched off. Step 1: Locate the dimmer switch. Step 2: Adjust the dimmer switch. Step 1: Locate the fuse for the dashboard lights. Step 2: Remove and inspect the fuse. Step 3: Replace damaged fuses.

Why are my brake lights and speedometer not working?

ABS, DSC, BRAKE lights on & Speedometer not working. Help! My fuel pump went out so I towed my car home. After installing the new pump, the ABS, DSC, and BRAKE lights are on. Also the Speedometer does not work.

Why are the lights on my dash not working?

Flip the switch or turn the dial or knob up and see if the lights on your dash come on or get brighter. If adjusting the switch doesn’t work, you may have a blown fuse or bad lightbulb. Or, the entire switch may be faulty, in which case, have it replaced by a certified mechanic.

How does a speedometer calculate the speed of a car?

Your vehicle’s speedometer calculates the speed of the vehicle through interaction with the transmission and driveshaft. Your car’s computer is able to translate the rotational speed of the driveshaft into the linear speed of your vehicle, transmitted to you, the driver, through the speedometer.

Where can I get an inspection on my speedometer?

Speedometer inspection at your home or office. Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM. Our certified mobile mechanics can come to you now.

How does a speedometer work on a VW?

A speedometer is a valuable instrument that shows the driver real time readings of the speeds of their Volkswagen. While most modern VW’s use speed sensors to determine speed, some older vehicles used gears and wires for the speed reading.

Why does my odometer stop working on my Chevy?

If your odometer stops working in your Chevrolet, it may be due to a couple reasons. Depending upon the year and model of your vehicle, the fix may be something you can do or something you may need to take to your dealership for repair. If neither of these indicators is working, then the problem may lie within the speed sensor on your vehicle.

How do you transfer mileage from odometer to speedometer?

The process is not complex, but it is time consuming. Legally, both meters need to be sent to the speedometer shop to have the mileage transferred. The speedometer shop literally has to run the new speedometer/ odometer manually with a tool until it reaches the mileage of the original odometer.

Why is my odometer and speedometer not working?

The speedomerter, odometer & mileage guages are not working. Have not experienced any other symptoms. Brakes are operating properly, have not received any warning/service lights other than tires need rotating. Was told by a mechanic that it’s the ABS System Sensor and was given the quote for a used one for $500 plus. Can you advise on this?

Why is the speedometer on my Dodge Ram not working?

The sensors are a set of magnets that deliver a pulse. When a Dodge Ram 1500 speedometer is not registering speed, there are a few possible causes. Here are some tips for locating the problem. You may be saying, “My speedometer is not registering speed, but everything else is working.” If so, it could be that your fuse has blown.

Where is the speedometer and odometer located?

If both your odometer and speedometer are not working, then it’s likely your speed sensor needs to be replaced. These are easily installed and located near the back of your transmission.

Why are the lights on my dashboard not working?

Adjust the dial or knob to see if that fixes the problem. If the switch was accidentally bumped, your dashboard lights might have been turned off. Flip the switch or turn the dial or knob up and see if the lights on your dash come on or get brighter. If adjusting the switch doesn’t work, you may have a blown fuse or bad lightbulb.

Where is the dimmer switch on the dashboard?

Locate the dimmer switch for your lights. Most vehicles have a dashboard light control switch that will dim the dashboard lights as well as turn them off. Find the control switch, dial, or knob, which is generally located on the console near the steering column or may be part of the headlight switch.

Why is the speed sensor on my car not working?

In less common circumstances, the electronic control unit (ECU) could also be malfunctioning. If you take your car to a qualified technician, they will be able to connect to the ECU to read trouble codes and other data. Using specialized testing equipment, they will also be able to actually test the speed sensor itself.

Why are the wiper blades on my car not working?

Your wiper blades are torn. The condition of your wiper blades is directly related to how well your windshield wipers work. If the rubber edges on your wiper blades are torn, the wiper will not make proper contact with the windshield to clear moisture or debris away.

When do dash lights come on and gauges drop to zero?

Dash lights came on and gauges dropped to zero gasoline w… When driving, occasionally all the dash lights will come on, but the gauges like gas, battery, and mileage, will all drop down to zero. Then my radio shuts off. Fortunately, the car keeps driving. All of this happened today, at a busy intersection, right before a stop light.

Where do you get Raman spectra from a speedometer?

Raman spectra obtained from the needle and needle slap mark on the gauge plate. … a) Image of magnified print of the needle of speedometer from a motorcycle instrument panel showing black points, corresponding to traces of the gauge plate on the needle back. b) Raman spectra from: I. Gauge plate; II. Needle; III.

What do you need to know about fuel gauges?

In an old-school classic with analog gauges, you’ll need to know how the gauge works, as manufacturers used different electrical conductance to operate the gauge. For example, a Ford fuel sending unit has almost zero resistance on a full tank, while a GM sending unit of the same year has maximum resistance on a full tank.

How do you test the fuel sending unit?

To test the fuel sending unit, you will need to fill the tank with gas. Use a multimeter to test resistance. In an old-school classic with analog gauges, you’ll need to know how the gauge works, as manufacturers used different electrical conductance to operate the gauge.

Where is the fuel gauge on a Chevy Camaro?

On the other hand, gaining access to the fuel sending unit on a third-generation Chevy Camaro requires you to drop the gas tank, while the fuel gauge is easily accessed after removing eight screws. Start with whichever is easier on your vehicle. To test the fuel sending unit, you will need to fill the tank with gas.

What should I do if my fuel gauge is stuck?

If the gauge gives you a full reading, the sending unit is faulty and should be replaced. Verify that all of the wiring is securely connected to the back of the fuel gauge, which will require you to remove the dashboard to gain access to the instrument cluster.

What to do if your Trailblazer gauge is not working?

Use a fuse puller tool to remove the fuse from the fuse block. Install a new 10A fuse into the TrailBlazer’s fuse block. Reattach the fuse block’s cover and close the hood. If the gauges are still malfunctioning, the issue may be the wiring.

How do you remove the odometer from a Chevy Blazer?

It is very simple, just remove the cluster and find a bad solder on the wire going to the odometer/gear selector display. (Most likely going to be the top wire/solder that is broken as shown in the video) This applies to 1998, 1999, 2000, 2001, 2002, 2003, and 2004 Chevy s10, Blazer, and Silverado trucks (Sonoma, Jimmy, Sierra).

What happens when all the dash lights come on?

When driving, occasionally all the dash lights will come on, but the gauges like gas, battery, and mileage, will all drop down to zero. Then my radio shuts off. Fortunately, the car keeps driving. All of this happened today, at a busy intersection, right before a stop light.

What are the warning lights on a Chevrolet?

The following are warning lights and indicators found in vehicles built by Chevrolet. Click a link to learn more about each one. They are roughly ordered by importance, which tends to be by color (red, amber, yellow, orange, green, blue, gray). There are nearly 50 of them so search carefully!

Why does my Chevy Hummer keep stalling?

Fuel supply faults are a possible cause of stalling as are vacuum leaks and faults with engine sensors. On the Hummer it has been reported that faults with the throttle body commonly cause stalling and consequently that might be a… I took my transmission out to change out 3 freeze plugs on the motor.

What causes a car speedometer to stop working?

1 When The Sensors Have Failed… Find the location of the sensors and check them along with the wires connecting to them for any visible damage. 2 When The Wiring Is Bad… The wires can short or worn out in an older car and cause the fuse to blow out. 3 If The ECU Is The Culprit Here…

What to do if your odometer doesn’t turn on?

Hoping someone has had some experience and knows what my issue is. 1. Put the key in the ignition and turn the engine on. 2. If your odometer looks normal, go to step 3. If it doesn’t turn on, or the digits look strange, go to step 6. 3. Wait a few minutes and look for the word “ERROR” at the obometer.

What kind of speedometer does a 1969 Oldsmobile Super Sport have?

Whether you have a 1969 Chevrolet Nova Super Sport, a 50s era Oldsmobile Rocket Eighty-Eight, or even a British sports car like a Jaguar E-Type the speedometers basically work the same. A signal originates from a driven gear that meshes with the transmission tail shaft.

Why are some of the gauges on my car not working?

If some gauges work and others don’t, suspect a sender or sender wiring problem. If none of the gauges work suspect a power or ground problem since all of the gauges are daisy chained from one gauge to the next.

What should I do if my gas gauge stops working?

Gas gauge, almost empty. Water temp, cold. No oil pressure. The alt wasn’t charging. No tac and no speedometer. The Lights work fine, The odometer is still rollin over, cruise control works, Gear selection indicator read out works fine.. Any ideas?

Why are all the gauges on my GM Truck not working?

Last night I was comin home from the store and realized my speedometer wasn’t working (ins’t the first time) so i hit the dash, then realized NONE of the gauges were working.. Gas gauge, almost empty. Water temp, cold. No oil pressure. The alt wasn’t charging. No tac and no speedometer.

What causes a check engine light to come on on a speedometer?

An issue with the speed sensors or speedometer head is the reason. Worn out connecting cables are the culprits in older cars. Check engine light comes on. It happens due to a faulty sensor that cannot process the information received from the ECU. It also causes the speedometer behaving erratically. How to Control Speed to Save Fuel?

Why does my speedometer bounce?

Bouncing or jerking of speedometer. In cases where the speedometer does not settle on any particular reading but keeps moving between speeds, it is almost always due to bad wiring, in case of a cable system, or a faulty speed sensor.

What causes a speed Senser to go bad?

A transmission speed sensor can malfunction for a variety of reasons: Corrosion of the component Loose or disconnected wires Cracks in the housing of the sensor Sensors flying off of their shaft entirely A poor connection between the sensor and the ECU A damaged magnetic coil

What would cause tachometer bounce?

There is a grounding strap INSIDE the distributor that is required for the pertronix to work right. If that grounding strap is broken then you can get fluctuations that could cause the pertronix to not fire and that would cause the tach to bounce.

What happens when the speedometer on a Ford Ranger stops working?

One of the most inconvenient things that can happen to your Ranger is when the speedometer stops working. You don’t really realize how much you look at the thing until it’s just always sitting at 0 MPH while driving down the road.

What does the speedometer and fuel gauge tell you?

Speedometer: The speedometer gives information about the speed at which the car is moving. Fuel Gauge: The fuel gauge indicates the amount of fuel left in the car and how far it is from an empty tank or a full tank. Tachometer: This describes the rotation rate of the crankshaft in the engine.

Why is my shift gauge not working on my Chevy Silverado?

Gauges that are not working could mean a faulty ignition switch. This has been an issue on this truck series. A bad ignition means that there may not be full voltage available to activate the shift solenoids. Replacing the switch will cure the problem. Figure 1. Look for blown fuses or damaged wiring.

How to troubleshoot a temperature gauge in a car?

Temperature gauge troubleshooting begins with isolating the problem either to the gauge, sending unit, fuse or wiring. As with any electrical troubleshooting it is best to check all wiring connections are clean, tight and free of corrosion. The following process must be preformed with the ignition key turned to the “on” position.

What are the problems with a 2004 Chevy Monte Carlo?

1 Gauge Cluster Needles Spazz Out 2004 Monte Carlo Average Cost to Fix: N/A Average Mileage: 64,000 mi 2 Speedometer Malfunction 2004 Monte Carlo Average Cost to Fix: N/A Average Mileage: 49,000 mi 3 Head Gasket Failure 2004 Monte Carlo

Is it time to move on from Chevy Monte Carlo?

Donate your CHEVROLET MONTE CARLO! Is it time to move on? Support NPR & the programs you love. Donate your old car in minutes through the CarTalk Vehicle Donation Program. Click on a category below for details.

How much GPM does a Chevy Monte Carlo have?

I get between 28.5 to 29.5 gpm. The car is a 2 door with enough space for myself & other passengers , has a very powerful engine also motor it shifts smoothly throughout driving it I purchased my car new; 2006; I purchased another car in 2014; but for some reason I cannot let go of my Monte and I have a Daytona Charger since 2014.

Why would the speedometer read the wrong speed?

Many things can throw off your speed or the way your speedometer reads it. Damaged wiring or a blown fuse could be enough to through the speedometer out of whack. A malfunctioning sensor or engine control unit could be reporting an erroneous speed.

Why is my speedometer not working on my Chevy S10?

If your Chevy S10’s speedometer is not working, it’s usually going to be caused by an issue with the VSS (vehicle speed sensor), or a bad ECU. The VSS is usually not very expensive, and they are not that difficult to replace. Vehicles used to use a cable that would usually run from the tail shaft of the transmission to the speedometer.

Why is my speedometer and cruise control not working?

The reverse is also true, so if both your speedometer and cruise control are malfunctioning, you can suspect a bad speed sensor or faulty wiring. In less common circumstances, the electronic control unit (ECU) could also be malfunctioning.

How to repair GM instrument cluster you speedometer?

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What do you do when your instrument cluster doesn’t work?

Also when you drive the car, the speedometer and the rpm gauge doesn’t move. Everything light wise works. Everything works except the rpm, speedometer, temperature and gas gauge. All fuses and relays are good. I’ve even changed the instrument cluster and the BCM. Still none of the gauges work.

What to do if your Ford Focus speedometer is not working?

If your Ford Focus’s speedometer is not working, the first place to go would be to check the service engine soon light (if applicable). Now, take it out and see if the cruise control still works. If it does, that’s a pretty good indication that the vehicle speed sensor is just fine.

How accurate is the speedometer?

No speedometer can be 100 percent accurate. In fact, most manufacturers build speedometers so they fall within a fairly narrow tolerance range, no more than 1 percent to 5 percent too slow or too fast. As long as a car is maintained at factory specs, its speedometer should continue to register vehicle speed within this range.

What to do if there is no power window?

Check the power window circuit breaker for voltage, key on. That circuit breaker is in fuse box, under right side of dash. Use a testlite to check for voltage. Test the terminals with the key on. If no voltage, you’ll have to check out the ignition switch.

What’s the problem with my speedometer not working?

Re: Speedometer not working and abs and brake light stay… Problem: I have a 2004 Dodge Ram 1500 5.7 L HEMI. My ABS and Parking Brake lights were illuminated, and my speedometer needle would “bounce”. Also when sitting at a stop sign or just sitting idle, the engine would stall, and often times stop running.

What to do if your odometer is not working?

To fix it, I “jumped” power from the row above at fuse #6 or 7 it was a blank “not used fuse” that only gives power when the ignition is on. (tested with light) I simply stripped both ends of a short wire and jumped it from top terminal to top terminal. Probelm solved…got my speedo, odom back, and brake n abs light off.

How can I Fix my Mercury speedometer reading?

This problem is easy to fix with one simple tool a drill bit. Locate the tiny hole on the leading edge of your lower unit. This is where water is forced in and runs to the back of the speedometer, giving you your reading. Find a drill bit that fits appropriately into the hole.

The speedometer is not working, and the ABS, brakes, and ESP Lights are lit on the dashboard. Sometimes the Check Engine Light is on as well. I’m not sure if the ABS module should be replaced. Greetings! When a Check Engine Light goes on then off, a trace of what caused the light to set will usually be left in the vehicle’s computer.

Why is the ESP light on my abs not working?

A technician should retrieve the codes in the computer to see if there are any indicators as to what is causing this light. The wheel speed sensors are the likely cause of the ABS Light, ESP Light, and for the speedometer not working.

What does it mean when your speedometer stops working?

The temperature seems to be the key wether it works or not. When the speedometer stops working, many warning lights come on. The are the parking brake light, brake wear light, bas/esp, abs, and maybe one more i am fogetting.

Can a faulty ABS sensor cause the ESP system to be disabled?

Because the ESP system depends on the ABS system to function properly, the ESP system will also get disabled. A faulty ABS sensor could cause other issues as well such as Check Engine Light, car not moving when in Drive, speedometer not working.

What causes the Bas ESP light to be disabled?

Look for Group 49 Sealed AGM Battery. If you have an ABS sensor that has failed, it will also trigger the ABS, ESP, BAS light. Because the ESP system depends on the ABS system to function properly, the ESP system will also get disabled.

What to do if your gas gauge is not working?

Gas gauge not working ? Some test to check it – YouTube If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

If you remove the intake arm from the intake manifold, and look straight down with a flash light you will see a sensor that is located on the transmission and held down by 2 10mm socket bolts.

What should I do if my ABS sensor is not working?

Debugging is best done with a DMM; an OBDII scanner can ONLY find “communication errors”, i.e., it cannot tell a bad speed or pressure sensor from a bad ABS control module and will often report the wrong problem because it isn’t inserted BETWEEN the ABS control module and the various sensors (see extensive reports by 540iman on this ).

Why is my abs and brake light not working?

If you purchase one from a junk yard or used parts dealer, your mileage will not be correct and some of your options will not work. You can’t post conmments that contain an email address. An expert who has achieved level 1. An expert that has 1 follower. Re: Speedometer not working and abs and brake light stay…

Why is the ABS light and brake light not working?

I have a 1998 Dodge Ram 1500 Both the ABS light and the brake light are on. Changed the Speed sensor on the differential it didn’t help. I did replace the RWAL/ABS fuse and now the speedo works. Next I’m checking the front wheel sensors after that idk what to try. Any advise would be helpful. I have a 99′ Dodge RAM 2500.

What’s the best size for a GPS speedometer?

Round Gauge: Round gauge GPS speedometers replace your existing instrument-based speedometer. Make sure you buy the proper size that fits in the same size hole as your current speedo, typically 85mm.

Why is your speed odometer not working?

The odometer stops working because the gear within the odometer has worn out. You’ll need no special tools to do this, but you must know what to watch out for or you could permanently damage the speedometer that is housed in the same gauge as the odometer.

What could cause the speedometer not to work?

Is it dangerous when odometer is not working?

Odometers are significant because when you purchase or sell a vehicle, a large portion of the vehicle’s value is based upon the vehicle mileage, which is read off the odometer. Driving without a fully functioning odometer is perfectly safe, but if you plan to sell the vehicle any time soon, have the odometer fixed.

What does it mean when your abs light comes on?

This would certainly cause the ABS light to come on, which means you’d need to replace the pump right away. When the ABS light activates on your car’s dashboard, it signals that something is wrong with the anti-lock braking system.

Is the speedometer not working and ABS and brake light stay?

Re: Speedometer not working and abs and brake light stay… You can’t post conmments that contain an email address. An expert who has achieved level 1. An expert whose answer got voted for 2 times. Re: Speedometer not working and abs and brake light stay…

Why does my car’s instrument cluster stop working?

Sensors in the vehicle generate signals that send to the car’s computer. The computer converts them into something that can be read by the instrument cluster. If one doesn’t work, such as the speedometer, how can you tell if it’s a problem with the entire instrument cluster or something else?

What kind of signal does a speedometer have?

Determine the signal source. Generally most speedometer signals will be one of three types, for simplicity, we will call them one-wire, two-wire, and three-wire. One-wire signalsare typically found in late model computer controlled transmissions or fuel injected applications. This single wire is the signal wire.

What do I do if my gas gauge is not working?

In most cases, to gain access to the fuel tank sending unit mount / fuel pump mounting hole, you’ll need to drop the gas tank down. Be sure to do this when there is either minimal gas in the vehicle, or it’s been siphoned out.

How does the fuel gauge work in a car?

The fuel gauge in your automobile indicates the amount of fuel that remains in the gas tank. Some fuel gauges have an analog display while others have a digital or liquid crystal display. Electronic and software malfunctions may cause the fuel gauge in your automobile to inaccurately measure or display the amount of fuel remaining in the gas tank.

What’s the best way to repair a speedometer?

Place the speedometer face down on a clean, un-cluttered work area on a surface that you don’t mind scratching: It’s recommended that you put a rag or old towel between the face of the speedometer and the work surface.

Can a dead speedometer on a Polaris be repaired?

If you have a “dead” speedometer of the newer version and would likely me to take a crack at fixing it (absolutely no guarantees about success!) then feel free to contact me via comments, below. Last year, a friend of mine had the battery go bad on his 1999 Polaris Sportsman 500 4-wheeler.

What would cause a tachometer to stop working?

Check the Manual: Checking the owners manual will give you the information on your car’s tachometer before you begin.
a tachometer can stop working because of a damaged LED display unit.
find the fuse for the tachometer.

What causes your gauges to stop working?

The most common causes of the gauges in a car not working can be broken down into three scenarios: None of the gauges work. If none of the gauges work at all, the problem may be a blown fuse or a defective instrument cluster. An individual gauge doesn’t work. If the oil pressure, coolant, charge, or gas gauge doesn’t work or works erratically, the problem is in the gauge, wiring, or sender. One or more dashboard warning lights don’t work.

What causes dashboard gauges to stop working?

Why does my oil gauge keep going bad?

If installing a thicker viscosity oil raises the oil pressure, then something major is wrong inside the engine. Besides, modern cars are designed to use very thin oil anyway. Gauge Problem vs Oil Pressure Problem Dashboard gauges do occasionally go bad, but it is very rare.

What causes the oil pressure gauge to drop?

The oil pressure gauge will usually drop when a few things could be happening. Either the motor is in fact low on oil, the oil pump could be failing or the oil pressure sending unit is not working properly and may be producing a faulty reading.

To fix it, I “jumped” power from the row above at fuse #6 or 7 it was a blank “not used fuse” that only gives power when the ignition is on. (tested with light) I simply stripped both ends of a short wire and jumped it from top terminal to top terminal. Probelm solved…got my speedo, odom back, and brake n abs light off.

If cruise control is working, and the check engine light is on, it may indicate a problem with the speedometer itself, and may require a change of the instrument panel. A ‘check engine’ light is a serious issue on its own and must be checked immediately.

FMH Reply: Michael, check out your ECM plug. Disconnect it from the ECM and blow it out with compressed air. Reassemble with electric grease. You should also do the same with your TSSM (turn signal security module) and its plug. You did not mention any modifications to this m/c. That info is usually helpful. Reply: Thanks you.

A ‘check engine’ light is a serious issue on its own and must be checked immediately. In cases where the speedometer does not settle on any particular reading but keeps moving between speeds, it is almost always due to bad wiring, in case of a cable system, or a faulty speed sensor.

What should I do if my speedometer is not working?

Solution : If a bad sensor turns out to be the primary cause, the solution will most likely be to replace the wheel speed sensor. Behind the scenes of your speedometer, there’s a computer and electrical system that helps relay signals about how fast your car is moving, among many other things.

Vehicle speed sensors feed information to a number of systems in the car about how fast your vehicle is traveling. The anti-lock brake system (ABS), the speedometer gauge, and cruise control are just a few of the important features of a car that rely on this vehicle speed data to do their jobs.

Why is the odometer on my Harley Davidson not working?

The odometer mileage is displayed but does not change. The trip meter stays the same and does not change. The directionals don’t self cancel any more. All codes clear. I recently installed an amp with speakers that runs off of an ipod.

Is it time for a new speed sensor?

Perhaps it is time for a new speed sensor? or is it time for a new speedo. 2000 softail deuce. Okay. I replaced the speed sensor ($58) from the dealer.

What’s the speedometer on a 1995 Ford F150?

Hi, I have a 1995 Ford F150 with a 5.0. My trucks speedometer works smoothly up to 33 mph but then will start bouncing (more aggressively at higher speeds) from random points.

Your Chevrolet’s speedometer gives important readings about your current speed. If you are experiencing problems with yours, don’t fret — these issues are common and easily fixed (usually). In fact, TrailBlazer speedometer problems are one of the most common topics discussed on popular Chevy online forums.

What happens if you have a faulty speedometer?

At worst you could find yourself driving at a speed that’s unsafe for the road conditions. There are many possible reasons behind a faulty speedometer. The most common involve the vehicle speed sensor or an electrical issue. Both problems can have impact in areas of your vehicle outside the speedometer.

Hi, I have a 1995 Ford F150 with a 5.0. My trucks speedometer works smoothly up to 33 mph but then will start bouncing (more aggressively at higher speeds) from random points.

What’s the name of the computer behind the speedometer?

Behind the scenes of your speedometer, there’s a computer and electrical system that helps relay signals about how fast your car is moving, among many other things. This computer is known as the engine control module (ECM).

How to diagnose an alternator or electrical problem?

Diagnosing alternator problems can be a bit tricky because the electrical system in a car comes from two places, the battery and the alternator. I’ll give you a little background so you can understand what both systems do. The battery has one primary function, which is to start the car.

What does it mean when your alternator is not charging?

If the alternator is not charging the battery, you will have a red “ALT” or “charge” sign on your dashboard. This means that your battery is no longer being supplemented for power by the alternator. You will need to recheck the wiring because the light could also be faulty.

Another sign that your alternator is not charging is that the dash lights and headlights will get lower when your car is idling, but become brighter when you rev your engine. This means that you could have a weak alternator, or a poor connection at the battery terminals.

How can you tell if your car charger is in trouble?

Usually, the first sign that your charging system is in trouble is a “battery,” “ALT,” or “CHARGE” warning light illuminating on your instrument panel while driving. It means that for some reason, the alternator has stopped charging the battery and your car is running on battery power.

How can I tell if I have an alternator problem?

To differentiate an alternator problem from the battery, you will need to use a voltmeter to check for voltage. First, turn off the engine and check the battery voltage. A fully charged battery should have a reading of 12.65 volts. Next, turn on the engine and recheck the voltage. You should have a reading of 13.5 to 14.5 volts.

Gas gauge, almost empty. Water temp, cold. No oil pressure. The alt wasn’t charging. No tac and no speedometer. The Lights work fine, The odometer is still rollin over, cruise control works, Gear selection indicator read out works fine.. Any ideas?

What to do when your car gauges are not working?

The fuse should have power on both sides when the ignition key is turned to the on position. You can check this with an inexpensive test light or multimeter, or take your car to a mechanic if you don’t have the right tools or aren’t comfortable digging into a diagnostic like this.

What do you do when your clock stops ticking?

There’s a quick and easy way to get your clock working again if you have a good ear and patience. First, get your timepiece ticking by gently pulling the pendulum to one side and letting go. Then, listen carefully to the tick tock rhythm. A clock that’s in beat will have an equal amount of silent space between the tick and the tock.

What causes a spring driven clock to stop working?

Trouble shooting your spring driven clock movement. In many cases the complaint with a mechanical clock is that it stopped working after it was moved. This is usually from someone moving the clock without taking the pendulum off and this puts the clock out of beat.

Why does the weight of the clock keep the clock running?

It depends on the clock. All clocks are meant to be level and in beat from side to side, but not all clocks are meant to be perfectly level from front to back. The point is, to keep the pendulum totally free from obstructions because it uses its own weight and momentum to help keep the clock running.

Why does my gas gauge always say full?

When the vehicle is in motion, the sending unit is in constant motion, constantly rubbing the variable resistor. Over time, the contacts can wear, leading to an open circuit. The gas gauge might interpret voltage feedback from a dead sender as FULL or EMPTY, consequently pegging the gauge no matter the actual fuel level.

Last night I was comin home from the store and realized my speedometer wasn’t working (ins’t the first time) so i hit the dash, then realized NONE of the gauges were working.. Gas gauge, almost empty. Water temp, cold. No oil pressure. The alt wasn’t charging. No tac and no speedometer.

What causes an oil pressure gauge to not work?

3 Common Oil Pressure Gauge Problems 1 Oil Pressure Gauge Not Working You will notice your gauge not working at all when it stays bottomed out whether the… 2 Oil Pressure Gauge Reading Too Low When your engine is idle or when you’ve just started your car, the oil pressure… 3 Oil Pressure Gauge Reading Too High More

When this is not working properly, you may also notice the transmission hesitating to shift gears, erratic tachometer readings, the speedometer not working properly or the odometer not working properly. I would recommend having an expert from YourMechanic come to your location to diagnose and inspect your vehicle.

Odometer & speedometer not working ABS & Brake warning lights lit. I have the same problem! what number fuse is it? and where is it located ? 756 people found this helpful.

Why is my odometer not working on my Dodge Ram 1500?

My speedo was possessed, fluctuating while parked and the odometer was advancing, also while parked. The ABS, Check engine, and Brake lights were all on. I first bought a new CPU. wasn’t the problem and took it back, tried a new Gauge cluster from a friends truck, still nothing.

Why is my radio and Windows not working?

Radio, a/c, and power windows wouldn’t work. Went straight to that 125 fuse. I pulled the fuse wiped it off an reinstalled. Everything works as advertised. I hooked a brand new battery up and started the vehicle. Nearly 30 to 45 seconds later radio power locks and windows stop with oil fuel battery and thermostat gauge.

Why are my tach and Speedo radios quitting?

Other problems I have seen is a corroded connector on the ABS module, corroded wiring in the rocker sill harness, rodent damage, and even faulty radios. Why the tach and speedo would quit is a mystery, those are basically hard wired between the ECM and the cluster but anything is possible.

What should I do if my gas gauge is not working?

Note that some self-test steps may stop the gas gauge at 1/4, 1/2, and 3/4, as well. Fuel sender test. The fuel sender test should be conducted when the tank is lower than HALF, to prevent fuel splashing. Start by making sure the plug is clean, dry, and free of corrosion. Make sure the pins are straight and that the connector is fully seated.

Why does my odometer and speedometer not work?

Non-working odometers and speedometers usually point to this reason. Defective gauges could likewise be due to a broken cable – that is, if your vehicle uses a physical cable instead of sensors for the speedometer to function. To fix this, you need to pull out your instrument cluster to get at the gears.

Can a bad fuel gauge sender send a bad signal?

Another, less common, symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. A faulty fuel gauge resistor can send a bad signal to the instrument cluster which can cause the gauge to permanently read full. This is an issue, as the driver needs to know the accurate fuel level of the vehicle as to not run out of fuel.

What causes a fuel gauge to read full?

Fuel gauge stuck on full Another, less common, symptom of an issue with the fuel gauge sender is a fuel gauge that is stuck on full. A faulty fuel gauge resistor can send a bad signal to the instrument cluster which can cause the gauge to permanently read full.

Behind the scenes of your speedometer, there’s a computer and electrical system that helps relay signals about how fast your car is moving, among many other things. This computer is known as the engine control module (ECM).

What should I do if my speedometer needle shoots up?

Although it usually takes a mechanic to be able to fix this problem, you can do some simple troubleshooting for the speedometer needle so you have an idea of possible causes and what to expect. Scenario: you are driving at normal speed when suddenly your speedometer needle shoots up by 10, 20, or even 40 miles an hour.

Possible problems: the speed sensor on the passenger axle may need to be replaced. The speedometer cable may be damaged or broken. If the vehicle has cruise control, the cruise control transducer could be faulty and a new one should put in its place.

When to see a mechanic about your speedometer?

If you feel you are driving faster or slower than what the speedometer reads, it is a good idea to have your vehicle inspected by Your Mechanic, as this might be a problem with the sensor that can be repaired or an indication that the speedometer sensor needs replacement.

It sounds like a circuit breaker is tripping either because of a bad speedo head unit or because of age. Start by replacing the breaker with a new h/d one.

When to worry about Intermittent check engine light?

Typically an intermittent check engine light concern happens under very specific conditions such as when it’s hot, cold, damp or driving over bumps. Knowing this information can greatly reduce the time it takes to locate the source of the fault. The first thing we need to do is duplicate the concern.

When does an indicator light turn on on a car?

Indicator light turns on whenever the engine is turned on to check the bulb. If the light stays illuminated, the car’s diagnostic systems have detected a malfunction that needs to be investigated.

How can I tell if my speedometer sensor is bad?

On most cars sold today, this will be indicated by the cruise control light being illuminated on the dashboard – even if it’s not engaged. If you experience this problem, it’s possible that the speedometer sensor needs to be replaced. 3. Check Engine Light comes on

Typically an intermittent check engine light concern happens under very specific conditions such as when it’s hot, cold, damp or driving over bumps. Knowing this information can greatly reduce the time it takes to locate the source of the fault. The first thing we need to do is duplicate the concern.

When to use a malfunction indicator light ( Mil )?

On most modern vehicles, the Check Engine Light (CEL) or Malfunction Indicator Light (MIL) will begin to flash if a misfire threatens to damage your catalytic converter. Automotive scan tool. I. How to Save Diagnostic Time With a Scan Tool

What does a misfire code on a check engine light mean?

Misfires that turn on the check engine light and log a cylinder-specific fault code are the easiest to diagnose. The OBD II system will identify the cylinder (s) that are not contributing their normal dose of power and set a code that corresponds to the firing order. A P0303 code, for example, would tell you that the No. 3 cylinder is misfiring.

If the cruise is working and the check engine light is on, the problem is likely with the speedometer itself. Also keep in mind that anytime a warning light comes on, your ECM should be scanned right away as this might indicate a very serious problem.

What to do if your dashboard light does not work?

A blown fuse can disable the vehicle’s dashboard light. The fuse box may be under the hood, or near the floor, near the brake pedal, or there may be two fuse boxes in both places. Refer to the diagram on the fuse box cover to locate the correct fuse. Replace the dashboard light fuse if necessary. Note: also check if the tail lights are working.

Where is the fuse on the dash light?

The fuse box may be under the hood, or near the floor, near the brake pedal, or there may be two fuse boxes in both places. Refer to the diagram on the fuse box cover to locate the correct fuse. Replace the dashboard light fuse if necessary. Note: also check if the tail lights are working.

What should you do if your temperature gauge is not working?

The first thing you always need to look at with a strange reading on your temperature gauge is giving a strange reading is the actual temperature of your engine. Always rule that out first before focusing on the gauge itself. If you know the engine temperature is not an issue, you probably have to deal with one of these problems;

Why is my fuel gauge not working on my GM Truck?

Specifically with the instrument cluster, the speedometer maxed out, RPM didn’t work at all, fuel gauge quit, engine temp gauge quit, transmission temp gauge quit, message center quit, and most of the dummy lights would not work.

What happens when your fuel gauge stops working?

All of a sudden my power windows, radio, and fuel gauge stopped working. I have checked all fuses and even replaced a sudden my power windows, radio, and fuel gauge stopped working..fuses… Vocational, Technical or Tra… 2004 Ford Escape with shift on column. Heard a pop. Smoke 2004 Ford Escape with shift on column. Heard a pop.

Why is my speedometer not working on my Sportster?

Electronic Speedometer: The electronic gauges fitted on 1995 and later Sportsters do not typically fail, but Harley has outlined a diagnostic procedure to confirm if the gauge is faulty or if the problem is elsewhere in the system. This procedure assumes that the wiring harness is securely plugged into the back of the gauge.

How can I get my speedometer to work?

Connect the end of the speedo cable usually attached to the wheel to a drill; the cable can be spun fast enough to register speed on the speedometer gauge (see video). Assuming the cable is good, the speedometer needle should move freely.

What to do if your speedometer is not working?

If your Opel Corsa’s speedometer is not working, the first place to go would be to check the service engine soon light (if applicable). Now, take it out and see if the cruise control still works. If it does, that’s a pretty good indication that the vehicle speed sensor is just fine.

Why is my speedometer not working on my Aveo?

The causes of a bad speedometer will typically be found in these four things: VSS – A faulty speed sensor will often be accompanied by the P0500 (VSS circuit malfunction) trouble code. The speed sensor does more than just control the speedometer, it also helps to control the cruise control system and may even affect the way that the engine runs.

Why is the speedometer not working on my Opel Corsa?

If your Opel Corsa’s speedometer is not working, it’s usually going to be caused by an issue with the VSS (vehicle speed sensor), or a bad ECU. The VSS is usually not very expensive, and they are not that difficult to replace.

How does a speedometer work in a car?

Vehicles used to use a cable that would usually run from the tail shaft of the transmission to the speedometer. There was a physical/mechanical connection between the drivetrain and the speedometer. Instead of this direct connection, a modern vehicle uses the vehicle speed sensor and relays that information to the speedometer.

What does it mean when your odometer does not work?

Take a look here. If your speedometer stops registering speed and your odometer does not move as far as registering miles traveled, you also realize that your directional signals do not self cancel, your engine could be running differently and stalling, your problem is more than likely the VSS (vehicle speed sensor) on the transmission.

What does it mean when your temperature gauge is not working?

The temperature sensor/sending unit is faulty. If this is the case your sensor will be reading the coolant temperature incorrectly and sending the wrong signal to the gauge. This could work in either direction and read as cool when it’s running hot or hot when it’s running cool. A malfunctioning circuit in the temperature gauge

Why is the fuel gauge and odometer not working?

If it is an open circuit, you’ve found a problem (with the fuel level system) Ron, you correct… no speedo, so fuel gauge, fuel light blinks, all backup lights are on, signals, lights all work fine… i will look at the sensors when I get home and check ohms… any updates? I have a 2000 midnight star.

Is the speedometer on my Freightliner not working?

The speedometer & odometer are not working. I hooked my prolink to it & do not get a Freightliner..The speedometer & odometer are not working… I have a 2003 freightliner with a 500 Cummins/10 speed that gets a true 6 mpg.

What to do if your tachometer stops working?

Check the Manual: Checking the owners manual will give you the information on your car’s tachometer before you begin. It should instruct you on how to check and repair your tachometer. Look for Display Failure: If it is a newer model, a tachometer can stop working because of a damaged LED display unit.

What to do if your Speedo is not working?

Test across for continuity. Otherwise, try each of the fixing screws for continuity to your sender plug, only those on the PCB though as the others only work the cam belt light. They cannot fail the car if the speedo does not work. It has to be illegible, obviously damaged or not illuminated.

How to check the odometer on a Speedo?

1, check to see if the odometer works while the speedo doesn’t. I found mine after the needle stopped for bore than the usual 400 yards and saw the counters turning. Test across the tracks on the PCB. 2, Run your test wires to the test plug you made up and have that fitted to the vehicle while you go for a spin and see if you get the same pulses.

The higher the fuel level or engine oil pressure, the lower the resistance. With less resistance, more current flows and the gauge reads higher. The oil pressure sender and fuel sender are both electro-mechanical devices but the temperature sender is not.

What should the voltage be on an AC speedometer?

The AC voltage should start at zero when the shaft is not spinning and gradually increase the faster the shaft is spun. Insure the speedometer has a dedicated chassis ground (not touching other ground wires) and a dedicated +12VDC. The power should not be run off the same fuse as high current devices such as radios, AC, electric fans, etc…

Why does my oil pressure read high on my Silverado?

If your 2003, 2004, 2005 or 2006 Silverado oil pressure gauge pegged out, has unusual fluctuations in it’s readings or reads high it can be caused by one of two problems. The first common cause is a faulty oil pressure sensor which is mounted on the engine. This is yet another common issue with 03-06 Silverados.

Is the Tacho, Speedo, and temp gauge working?

Still no tacho, temp gauge or back lighting though. 1) joining pink wire to black wire gives no result/no dash lights. On a side note, joining black to blue/black makes sparks ha ha! 2) alternator warning light (I assume this is the one that looks like a battery) and the oil pressure warning light are functioning.

Why are my dash lights not coming on?

1. The dash light dimmer switch works on the earth side of the dash lights. Having power in two wires indicates the dimmer switch might be faulty. Try joining the Pink wire to the Black wire. If the switch is faulty the dash lights should come on at full brightness.

#Test the dashboard light bulbs. If the fuses are working properly, check for a blown bulb in the dashboard. Following the manufacturer’s instructions, disconnect the battery while working on the dash, remove the faceplate covering your vehicle’s dashboard gauge panel. Remove the screws holding the plate on. Carefully remove the faceplate.

What do you use to lubricate a speedometer cable?

Lisle tools and the help auto parts brand make a gizmo that connects to the transmission side of the cable. It’s called a speedometer cable lubrication tool. It has a Zerk fitting that connects to any standard grease gun. This allows you to pump fresh lubricant up inside the cable. This can often solve problems but is not always successful.

Sensors in the vehicle generate signals that send to the car’s computer. The computer converts them into something that can be read by the instrument cluster. If one doesn’t work, such as the speedometer, how can you tell if it’s a problem with the entire instrument cluster or something else?

What happens if your instrument cluster is failing?

A failing instrument cluster can be bad news for you and your car. If you’re driving with a broken instrument cluster, you’re not getting the correct readings on the car. It’s important to have all the information displayed correctly in the instrument cluster. It maintains the health of your vehicle and your own safety on the road.

What to do if your odometer doesn’t work?

Your speedometer or odometer won’t do you any good if they are stuck, with arrows and numbers that don’t work as you are riding. Fortunately, the aftermarket can offer plenty of replacements to restore the proper operation of your gauges, all sourced from such companies as Trail Tech, Outlaw Racing, Hardline Products and others.

Do you need a speedometer on an ATV?

For you to get this information, you need to have properly-working dashboard gauges. Your speedometer or odometer won’t do you any good if they are stuck, with arrows and numbers that don’t work as you are riding.

Can a CD player be installed in a car?

I purchased a low-end radio/CD player manufactured by Dual, along with a wiring harness, and installed the radio. I disconnected the negative battery cable to install it, but then reconnected the cable to test the radio. I had made all the wiring connections and successfully tested the unit while the radio was sitting in the passenger seat.

~ Once you have removed the old cable from your car, you need to replace it with a new one. In the adapter, fix the square end of the new cable and also tighten the nut on the rotating shaft. ~ Now, pass the new cable through the passage and tighten the bolt at its rear end. This end should be fixed at the speedometer’s square hold.

What to do when your dash gauges stop working?

156 people found this helpful. It is best to just replace the Shift Lever Assembly. You will get a new Overdirve wire. It is probably shorted in different places and will cause multiple weird things to happen. LIKE : No radio, windows stop working, all Dash Gauges quit.

What does the fuel gauge on a Ford tell you?

Fuel Gauge: The fuel gauge indicates the amount of fuel left in the car and how far it is from an empty tank or a full tank. Tachometer: This describes the rotation rate of the crankshaft in the engine. Odometer: This tells you nothing but how many miles or kilometers the car has traveled depending on what system the region uses.

What causes the digital dash to stop working?

When this is defective, your digital dash may not entirely stop working. However, your gauges will read extremely high/low, act up, or become erratic. Even jumpstarting your vehicle or switching out the battery can cause an electrical spike that can lead to, say, a speedometer going berserk. 7. Wiring Problems

Why does my odometer stop working on my Harley Davidson?

It’s located on the transmission just behind the rear pipe. A good quality gear lube will just about eliminate this problem. The magnetic speed sensor pick up gets fouled from the metal shavings in the transmission which causes the speedo to stop working and the directionals to stop self canceling because of no input to the ECM from the sensor.

Why does the speedo on a Harley Davidson stop working?

The magnetic speed sensor pick up gets fouled from the metal shavings in the transmission which causes the speedo to stop working and the directionals to stop self canceling because of no input to the ECM from the sensor. The ECM thinks that the bike is standing still because of no input.

Why is the speedometer not working on my Ford Explorer?

If your Ford Explorer’s speedometer is not working, it’s usually going to be caused by an issue with the VSS (vehicle speed sensor), or a bad ECU. The VSS is usually not very expensive, and they are not that difficult to replace. Vehicles used to use a cable that would usually run from the tail shaft of the transmission to the speedometer.

Why does my speedometer go off when I jump start my car?

A common problem for this malfunction is when the car owner recently replaced the battery, or perhaps jump-stared their vehicle, which in both cases could have caused an electrical spike that made the speedometer go berserk. See the simple reset solution in the video below, demonstrated on a 2002 Chrysler Sebring.

How does the odometer and speedometer work?

The speedometer and odometer measure the speed and the distance driven. They are electronic components that read a series of electronic pulses that have been converted via the vehicle’s computer into readable data such as the speed.

Take a look here. If your speedometer stops registering speed and your odometer does not move as far as registering miles traveled, you also realize that your directional signals do not self cancel, your engine could be running differently and stalling, your problem is more than likely the VSS (vehicle speed sensor) on the transmission.

The speedometer and odometer measure the speed and the distance driven. They are electronic components that read a series of electronic pulses that have been converted via the vehicle’s computer into readable data such as the speed.

Where is the speedometer located on a VW?

For all Volkswagen cars sold in North America, speed sensors for the speedometer operate off the front wheels. You will find these sensors behind the engine and above the trans-axle. Remove a connecting hose, the air clear, and connector above the sensor — then remove the bolts keeping the sensor in place.

Why does my gas gauge keep pegging full?

The gas gauge might interpret voltage feedback from a dead sender as FULL or EMPTY, consequently pegging the gauge no matter the actual fuel level. Circuit Problems can cause the gas gauge to stop functioning normally.

What happens to the gas gauge when the circuit is shorted?

If the internal circuit is faulty, the gas gauge may only function in one section, such as between HALF and FULL or between EMPTY and HALF. If the internal circuits are shorted, they may peg to FULL or EMPTY. If the circuit is open, the gas gauge will likely sit at EMPTY and never move.

How to repair a stuck or dead GM tachometer?

In this tutorial you’ll learn how to repair a sticky, stuck, jumpy or dead GM speedometer, tachometer, fuel gauge, oil pressure gauge, volt meter, water temperature gauge and transmission temperature gauge.

Speedometer: The speedometer gives information about the speed at which the car is moving. Fuel Gauge: The fuel gauge indicates the amount of fuel left in the car and how far it is from an empty tank or a full tank. Tachometer: This describes the rotation rate of the crankshaft in the engine.

Can a GPS sensor work with a speedometer?

The antenna is waterproof and you can paint it. The GPS Sensor Module will not work with “any” speedometer. If not an AutoMeter speedometer, it must be electronically driven and capable of reading a 12v square wave signal. It will not drive a mechanical speedometer. Do not wire it with an existing speed sender/sensor of any type or sort.

Can a faulty speed sensor cause a problem?

The sensor does this by recording how fast the crankshaft of your vehicle is spinning. A faulty speed sensor can cause all sorts of strange problems in your car. A faulty vehicle speed sensor can cause an array of problems.

How can I tell if my speedometer is not working?

Whether you have a digital or manual speedometer, if it’s not displaying accurate information, it doesn’t really help you. One of the biggest signs your speedometer sensor is not working properly is the speedometer will display inaccurate readings or the needle or digital numbers will not move at all on the speedometer display.

Can you sell a car with a non working speedometer?

You can sell that vehicle with the non-working speedometer to Cash Cars Buyer. We purchase all makes and models, at fair market value. We also offer a host of other FREE services, that will put money in your hands, fast! No need to find a junk yard, or a scrap yard, and try to get a dollar here or there.

What does it mean when my ” check gauges ” light comes on?

Her mechanical career has spanned 41 years working on everything from Porsches to Heavy Equipment to including classic vehicles which she owns several and has personally restored in a world dominated by men. What Does It Mean When My “Check Gauges” Light Comes On?

Instrument panel first. If your Jeep Grand Cherokee’s speedometer is not working, the first place to go would be to check the service engine soon light (if applicable). Now, take it out and see if the cruise control still works. If it does, that’s a pretty good indication that the vehicle speed sensor is just fine.

Her mechanical career has spanned 41 years working on everything from Porsches to Heavy Equipment to including classic vehicles which she owns several and has personally restored in a world dominated by men. What Does It Mean When My “Check Gauges” Light Comes On?

What happens when the speedometer on a Jeep Grand Cherokee stops working?

One of the most inconvenient things that can happen to your Grand Cherokee is when the speedometer stops working. You don’t really realize how much you look at the thing until it’s just always sitting at 0 MPH while driving down the road.

Why does my speedometer keep bouncing between speeds?

Bouncing or jerking of speedometer In cases where the speedometer does not settle on any particular reading but keeps moving between speeds, it is almost always due to bad wiring, in case of a cable system, or a faulty speed sensor. In most cases, only the wiring needs to be changed, or the sensors re-calibrated, to repair the problem.