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Home >> Kia >> 2004 >> Rio Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Fuel System & Fault Isolation >> Fuel System Monitoring >> Engine Control Components >> Knock Sensor
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Knock Sensor

The Knock Sensor is a feedback signal used to control of ignition timing. When knocking occurs, the Knock Sensor sends the signal to the ECM. The ECM then retards the ignition timing to reduce or eliminate the knock.