Manuals through 2025 now available!
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LEMON is the spiritual successor to CHARM, I recommend you try it!
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Knock Sensor: Description and Operation
KNOCK SENSOR (KS)Two Types Of Knock Sensor (KS):
The
KS is a tuned accelerometer on the engine which converts engine vibration to an electrical signal. The PCM uses this signal to determine the presence of engine knock and to retard spark timing.