* Engine idles erratically or stalls. The throttle position sensor sends a signal to the engine control unit (ECU) indicating how far open the throttle valve is. If this signal is incorrect, the ECU cannot control the fuel injection and ignition timing properly, which can cause the engine to idle erratically or stall.
* Engine performance is reduced. If the throttle position sensor is sending an incorrect signal, the ECU will not be able to provide the correct amount of fuel to the engine. This can cause the engine to run lean or rich, which can reduce performance and cause the engine to misfire.
* Check engine light comes on. The throttle position sensor is monitored by the ECU, and if it detects a problem, it will turn on the check engine light. This is a warning that there is a problem with the throttle position sensor or the engine control system, and it should be checked out by a qualified technician as soon as possible.
Additional notes:
* The throttle position sensor is usually located on the throttle body.
* The throttle position sensor is a potentiometer, which means that it converts the mechanical movement of the throttle valve into an electrical signal.
* The throttle position sensor is a critical component of the engine control system, and any problems with it can cause a variety of problems.
* If you suspect that your throttle position sensor is going bad, it is best to have it checked out by a qualified technician as soon as possible.
