Throttle Position Sensor

2018/05/10

Throttle Position Sensor, also called TPS sensor, is used to monitor the throttle valve position in internal combustion engines.  The TPS sensor is a potentiometer, which provides a variable resistance depending on the position of the throttle valve.

TPS sensor usually locate on the throttle valve spindle, so it could directly monitor its position.

Symptoms of a failing TPS Sensor include lack of power when accelerating, rough or slow idle, stalling, inability to shift up, and the Check Engine Light coming on.

 

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