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1983-99 Knock Sensor

SU121 - 1983-99 Knock Sensor

The Knock sensor generates an AC voltage created from the frequency of poor combustion in the engines combustion chambers. A mechanical fault within the motor creating a rapping sound may create false signals from this sensor. Ignition timing and the air/fuel ratio are adjusted to compensate for this condition.

The Knock sensor is located on the engine block and in some applications under the intake manifold. Failure Symptoms: Malfunction Indicator Light (MIL) illumination, failed emission te st, pre-detonation or "ping", increased …

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Product #: SU121

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MSRP: $38.99 ea
Classic: $34.99 ea


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