Symptoms and signs of a bad throttle position sensor (TPS), how it works, and how to see if it has failed.
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Symptoms of a Bad Throttle Position Sensor
Engine Light On
Rough or Uneven Idle
Drop in Fuel Economy
Surge Idle
Limp Mode
Engine Stalling
Trouble Accelerating


What is the TPS Sensor?
The TPS sensor reports the angle opening of the throttle body plate angle.
The computer uses this information to adjust the air-fuel ratio going into the engine.

How to Troubleshoot a Bad TPS Sensor?
Use an OBDII scan tool to scan for error codes.
Use a Multi Meter to test the sensor.

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