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Home >> Buick >> 1994 >> LeSabre Custom >> Repair and Diagnosis >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> Computerized Engine Controls >> Input Devices >> Camshaft Position Sensor (C(3)I)
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Camshaft Position Sensor (C(3)I)

The 3.8L C(3)I models use a Hall Effect camshaft position sensor. The cam sensor provides PCM with a TDC No. 1 signal used to compute the exact position of valves. This allows PCM to properly time fuel injection. A fault in the cam sensor circuit (no cam sensor signal) will allow the engine to continue running (based on last known timing) and should set a related trouble code. For additional information, see FUEL CONTROL  under FUEL SYSTEM.