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Home >> Chevrolet >> 1987 >> Monte Carlo SS >> Repair and Diagnosis >> Engine Performance >> System >> Carburetor - ROCHESTER E4MC/E4ME >> Description >> Throttle Position Sensor
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Throttle Position Sensor

The Throttle Position Sensor (TPS) is a variable resistor that is used to reflect changes in throttle valve angle. One terminal of the TPS is connected to a 5-volt source from the ECM, and another to ground. The third wire is connected to the ECM to measure voltage changes from the TPS.

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