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Home >> Pontiac >> 1987 >> Fiero Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - TBI >> Operation >> Data Sensors >> Vehicle Speed Sensor (VSS)

Vehicle Speed Sensor (VSS)

This sensor is mounted behind speedometer in instrument cluster. It provides ECM with pulses to determine vehicle speed. This information is used by ECM to control IAC motor.

NOTE: Vehicle should not be driven without vehicle speed sensor installed.
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