GM Camaro 1982-1992 Repair Guide

Knock Sensor

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See Figure 1

OPERATION



The knock sensor is usually mounted to the right lower side of the engine block. When spark knock or pinging is present, the sensor produces a voltage signal which is sent to the ECM. The ECM will then retard the ignition timing based on these signals.



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Fig. Fig. 1: Knock sensor

REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Drain the engine coolant.
  4.  
  5. Raise and properly support the vehicle.
  6.  
  7. Disconnect the knock sensor wiring harness.
  8.  
  9. Remove the knock sensor from the engine block.
  10.  


CAUTION
The knock sensor is mounted in the engine block cooling passage. Engine coolant in the block will drain when the sensor is removed.

  1. Installation is the reverse of removal. Tighten the sensor to 14 ft. lbs (19 Nm).
  2.  

 
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