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Home >> Oldsmobile >> 1985 >> Calais Base, 3.0 L >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Ignition System - C3I >> Operation >> Sensors >> Camshaft Position Sensor

Camshaft Position Sensor

A Hall Effect camshaft sensor provides the ECM with the exact position of the valves. This signal is used by the ECM to properly time the fuel injection and start the spark plug firing sequence.