What makes the speedometer in a car fluctuate sharply?
What makes the speedometer in a car fluctuate sharply?
The speedometer can fluctuate rapidly under normal driving conditions when the car’s speed changes abruptly, but sometimes the needle can start swinging around the dial without any fluctuation in speed. If the hairspring comes loose or breaks, it can’t hold the speed cup in place, and the result is a fluctuation in the dial.
What to do when your speedometer does not work?
Check the grounds for the dash panel. Also, unplug, clean and replug the various plugs leading from the dash panel to the rest of the car. If you notice any that seem sloppy (loose), have burned places, or are heavily corroded, replace them. Was this answer helpful? I have this problem in a 1994 Prelude (94 and up have the EL lighted gauges).
Why does the needle bounce on the speedometer?
That should cure it… The speedo cable for those old cars is like a spring. If it hangs up somewhere due to poor lubrication when it releases there is pent up energy so it “over releases” and creates the needle bounce you see on the speedo. This is first a lubrication issue.
How does the hairspring work on a speedometer?
The speed cup stops rotating as much, and the hairspring moves it back towards its start position–meaning the pointer on the dial moves back towards zero. An electrical speedometer works on a similar principle as the mechanical one, but has a simpler design.
The speedometer can fluctuate rapidly under normal driving conditions when the car’s speed changes abruptly, but sometimes the needle can start swinging around the dial without any fluctuation in speed. If the hairspring comes loose or breaks, it can’t hold the speed cup in place, and the result is a fluctuation in the dial.
Check the grounds for the dash panel. Also, unplug, clean and replug the various plugs leading from the dash panel to the rest of the car. If you notice any that seem sloppy (loose), have burned places, or are heavily corroded, replace them. Was this answer helpful? I have this problem in a 1994 Prelude (94 and up have the EL lighted gauges).
That should cure it… The speedo cable for those old cars is like a spring. If it hangs up somewhere due to poor lubrication when it releases there is pent up energy so it “over releases” and creates the needle bounce you see on the speedo. This is first a lubrication issue.
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 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.
The speed cup stops rotating as much, and the hairspring moves it back towards its start position–meaning the pointer on the dial moves back towards zero. An electrical speedometer works on a similar principle as the mechanical one, but has a simpler design.
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.
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.
What should I do if my Speedo is not working?
If there’s a problem with the ECU, this process can be interrupted – meaning the speedo either reports speed inaccurately (not good with speed traps around), or not at all. To fix the ECU, it must be reprogrammed by a professional mechanic. They will also be able to carry out a full diagnostic of the ECU to check on potential problems.
What happens if a fuse is blown on a Speedo?
When water comes in contact with certain connections in a car, it can cause blown fuses, each of which controls something different. If the fuse that controls your speedo is blown, it probably won’t work. In this case, replace the fuse and have your wiring looked at by a professional.
Is it possible to replace the speedometer sensor?
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.
Is there a problem with the transmission on my Taurus?
Problem seems to be worse the warmer the car is. By the way- my car has 245K highway miles and it is a 1998 Taurus LX. I was warned about bad transmissions in Ford Taurus, but I bought this car anyway, as the transmission worked perfectly during test drive.
Is there a problem with the speed sensor?
The “service engine soon” is indicating a problem. I am hoping it is as simple as a speed sensor (if speed sensor is simple on these cars). I know that on my old 91 Honda Accord- it was about a 10 minute task to replace the sensor. On the Honda- the “check engine light was illuminated and the speedometer did fluctuate and it shifted oddly.
Is the speedometer on a 1998 Ford Ranger?
The 1998-2000 Rangers are not equipped with a VSS (Vehicle Speed Sensor). The PCM (Powertrain Control Module) receives vehicle speed information from the antilock brake system rear wheel speed sensor.
