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Home >> Audi >> 1987 >> 5000 CS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> BOSCH Cis-E System >> Operation >> Ignition & Idle Control >> Knock Sensor
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Knock Sensor

The knock sensor is mounted at the front of the cylinder block. A 3 wire connector transmits signals to the knock sensor control unit and to the TCI. The sensor mounting bolt torque influences sensor function. See REMOVAL & INSTALLATION  section of this article. The knock sensors signal will advance or retard ignition timing to control combustion chamber pre-ignition.