Jeep Wagoneer/Commando/Cherokee 1984-1998

Knock Sensor

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OPERATION



The knock sensor is located on the lower left side of the cylinder block, just above the oil pan. The knock sensor provides and input to the ECU that indicates detonation (knock) during engine operation. When detonation occurs, the ECU retards the ignition timing advance to eliminate the detonation at the applicable cylinder.

 
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