How does the speedometer work on a Ford Expedition?

The programmable speedometer/odometer module (PSOM) receives input from the rear brake anti-lock sensor. After processing the signal, the PSOM relays it to the PCM and the speed control module.

What is the MAF sensor on a Ford Expedition used for?

The MAF sensor output signal is used by the powertrain control module to calculate injector pulse width. For transmission strategies, the MAF sensor is used to regulate Electronic Pressure Control (EPC), shift and torque converter clutch scheduling. The throttle position (TP) sensor is a potentiometer mounted on the throttle body.

Where is the IAT sensor on a Ford Expedition?

The IAT sensor is installed in the air cleaner outlet tube. The IAT sensor is also used in determining Electronic Pressure Control (EPC) pressures. The operation of the transmission is controlled by the powertrain control module. Many input sensors provide information to the powertrain control module.

How does the ignition control module work on a Ford Expedition?

The ignition control module operates by sending crankshaft position information from the crankshaft position sensor to the ignition control module. The ignition control module generates a profile ignition pickup (PIP) signal (engine rpm) and sends it to the PCM.

Where is the speed sensor on a Ford?

Slide under the vehicle and locate the speed sensor. On a Ford transmission, the sensor is located on the driver side of the transmission, toward the rear of the unit. The sensor is a magnetic unit that screws into the transmission and has an electrical connector plugged into it.

The programmable speedometer/odometer module (PSOM) receives input from the rear brake anti-lock sensor. After processing the signal, the PSOM relays it to the PCM and the speed control module.

How is the transmission of a Ford Expedition controlled?

Electronic transmissions are controlled by a computer, otherwise known as the powertrain control module (PCM). Troubleshooting the PCM is a complex job that requires some special test equipment that the average do-it-yourselfer does not have—nor is cost effective for them to purchase.

What does overdrive cancel mode do on a Ford Expedition?

The powertrain control module energizes the transmission control indicator lamp (TCIL) when the switch is off. The TCIL indicates overdrive cancel mode activated (lamp on) and electronic pressure control (EPC) circuit shorted (lamp flashing) or monitored sensor failure.

What was the result of the 2003 heat wave in Europe?

The 2003 European heat wave led to the hottest summer on record in Europe since at least 1540. France was hit especially hard. The heat wave led to health crises in several countries and combined with drought to create a crop shortfall in parts of Southern Europe.

What was average temperature in Europe in 2003?

Temperatures rose far above average in most of the country and reached very high mean values especially in terms of heat persistence.

What was the hottest temperature in the UK in 2003?

A new nationwide record temperature of 41.5 °C (106.7 °F) was recorded in Grono, Graubünden. The United Kingdom experienced one of its hottest summers on record with temperatures well above average. However]

Where was the warmest place in Europe in July 2003?

The warmest summer temperature was set on July 17 in the northern city of Piteå with 32.8 °C (91.0 °F), which although it is very hot for such a northerly coastal location, was largely unrelated to the latter central European intense heat wave.

How does the transmission work in a Ford Expedition?

The Powertrain Control Module (PCM) and its input/output network control the following transmission operations: Torque converter clutch operation. The transmission control is separate from the engine control strategy in the powertrain control module, although some of the input signals are shared.

What causes a Ford Expedition to not accelerate?

When the clutch can’t hold on anymore, it’ll start to slip. Slipping means that it loses its grip on the flywheel and it feels like you’ve pushed the clutch in. This will usually happen at highway speed, under heavy acceleration. It only gets worse as the clutch disk slips, burns up, and can handle less and less torque.

Why does my Ford Expedition not speed up?

Ford Expedition Won’t Accelerate: RPMS Go Up If your Expedition won’t accelerate, but the RPM’s go up it’s usually not going to be an engine related issue. Somehow, the power that your engine is creating is not making it to the rear wheels. This is typically a transmission related issue.

What to do if your Ford speedometer is not working?

Troubleshooting If you think you are having problems with your Ford speedometer because of tire or fuel changes, the the best way to solve it is by resetting the PSOM. You can do this by pressing the SELECT button found on the upper right corner of the speedometer, then you select zero for the trip odometer.

Where is the 4×4 low range switch on a Ford Expedition?

The 4×4 low (4x4L) range switch is located on the transfer case cover. It provides an indication of when the 4×4 transfer case gear system is in the low range. The powertrain control module then modifies shift schedule for 4x4L operation.

Are there transmission problems in my Ford Expedition?

It is clean with NO problems of ANY kind since I bought 2 months ago, as a matter of fact the car was driven from Boston to washington d.c with no problem. However, yesterday I noticed some little resistance in its movement and today the truck refuses to advance or reverse and people says it is the transmission.

Are there any problems with the speed sensor?

18 problems related to speed sensor have been reported for the 2013 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Ford F-150 based on all problems reported for the 2013 F-150.

What is the problem with the speed sensor on a Ford F-150?

The problem: a problem with the output speed sensor on the vehicle’s transmission lead frame could cause the transmission controls to force a temporary downshift into 1st gear.

What makes up the electronic ignition in a Ford Expedition?

The electronic ignition consists of a crankshaft position sensor, two four tower ignition coils, and the powertrain control module. The ignition control module operates by sending crankshaft position information from the crankshaft position sensor to the ignition control module.

What causes a Ford Expedition to stall at a stop?

Bad Solenoid. When your Ford Expedition stalls at a stop, just as it would if it had a manual transmission and you neglected to push in the clutch, that’s a sign that one of the solenoids is malfunctioning or has gone out.

What kind of sensor is on Ford pick up?

The cam sensor on your 4.6L or 5.4L Ford pick up (or SUV) is a variable reluctance type sensor that has two wires coming out of its connector. In plain English, this means that this type of cam sensor can easily be tested with a multimeter in Volts AC mode.

How to test the oxygen sensors in Ford 4.6L?

P0131 Upstream Heated Oxygen Sensor (HO2S11) Circuit Out Of Range Low Voltage (Bank 1). P0133 Upstream Heated Oxygen Sensor (HO2S11) Circuit Slow Response (Bank 1). P0151 Upstream Heated Oxygen Sensor (HO2S21) Circuit Out Of Range Low Voltage (Bank 2). P0153 Upstream Heated Oxygen Sensor (HO2S21) Circuit Slow Response (Bank 2).

What is the crank sensor on a Ford Explorer?

The crank sensor is one of the most critical components to get the engine in your Ford car (pick up, SUV, van) started. Since it provides the signal the PCM needs to start injecting fuel and start creating spark. Here are some specifics of the crankshaft position sensor: The 4.6L, 5.4L crank sensor is a two wire variable reluctance sensor.

How to test the crankshaft position sensor ( Ford 4.6L )?

You don’t need a scan tool to test the Ford 4.6L, 5.4L crankshaft position sensor (although a scan tool is a must have tool now-a-days). This tutorial will walk you thru’ the whole thing step by step. Contents of this tutorial: Important Tips And Suggestions. Where To Buy The Crankshaft Position Sensor And Save.

Why does my brake pedal go to the floor?

Checking for leaks. The failure to the system may be due to air in the lines. If the reservoir is full, try pumping the brake pedal to see if the pressure returns. If it does, you most likely have air in the lines. If you have air in the line, you will need to bleed your braking system.

What to do if your brake master is leaking?

If the master is leaking you will be able to see brake fluid dripping from the front of the brake booster and rear of the master. If a leak is observed the brake master cylinder must be replaced. Next, use a flashlight check the backside of each tire and look for leakage which will be obvious.

What to do when your brake pedal is near the floor?

At this time air can be pulled into the system in small quantities which causes the brake pedal to be near the floor. Bleed the brake system while checking for air in the form of bubbles being released from the bleeder screws and replace the brake components which air is observed from.

What causes a brake caliper to go to the floor?

If the backside of the tire is wet with fluid either you have a brake caliper that is leaking and must be replaced or a wheel cylinder that has gone bad and needs replacing. Both of these problems allow a fluid leak through their brake fluid seals.

What causes a brake master to stop working?

Pumping the brakes can cause these seals to expand and may help the brake master start working again. When this failure occurs, the brake master cylinder must be replaced with a new unit. Bleed the Brake System: Air in brake system can cause the system not to pressurize or pump up.

What happens if you have a faulty speedometer?

A faulty speedometer can cause major driving issues, which can lead to speed-related accidents or an unnecessary speeding ticket from the police. As with any brand of vehicle, Ford vehicles are susceptible to speedometer problems. Most Ford vehicles are equipped with a Programmable Speedometer/Odometer Module (PSOM).

How do you reset the odometer on a car?

Press & hold the odometer trip/reset button. Turn the key to the accessory position while continuing to press the button, but don’t start the car. ( alternatively, you can go ahead & start the car while pressing the button. I do it w the car off first, then w the car on ).

Is there a factory alarm on a Ford Expedition?

While some erroneously call this system the factory alarm, it really is not an alarm system. The PATS system will arm itself if someone attempts to start the vehicle with anything other than the PATS key programmed to that specific vehicle.

What does the PIP signal on a Ford Expedition mean?

The ignition control module generates a profile ignition pickup (PIP) signal (engine rpm) and sends it to the PCM. The PIP is one of the inputs that the PCM uses to determine transmission strategy, Wide-Open Throttle (WOT) shift control, torque converter clutch control, and EPC pressure.

Can a refrigerant be added to an expedition?

Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your Expedition consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

Why are the air suspensions on my expedition not working?

Expect the original suspension on your Expedition to work great until there are signs of trouble. Once those begin, there are a lot more on the way. While cars are typically built to last, there are several types of components that just don’t hold up over time. One of these types is a moving part.

How do I add Freon to my Ford Expedition?

How to add freon to your 2015 Ford Expedition: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure.

How does the speedometer work on a Ford Expedition?