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Home >> Pontiac >> 1981 >> Phoenix Base, 2D Coupe, 2.5L Eng VIN 5, Standard Trans >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Computer Command Control >> Operation >> Data Sensors >> Throttle Position Sensor (TPS)
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Throttle Position Sensor (TPS)

This sensor is mounted inside carburetor and is operated by accelerator pump lever. The sensor, a variable resistor similar to fuel tank sending unit, signals ECM of change in throttle blade position from closed to wide open throttle.

NOTE: The throttle position sensor is not used on 2.5L engines.