Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Knock Sensor: Service and Repair

REMOVAL

1. Disconnect negative battery cable.
2. Disconnect knock sensor harness connector from knock sensor.
3. Remove knock sensor from engine block.

INSTALLATION

1. Install knock sensor into engine block. Be sure threads are clean. Tighten to 14-22 N-m (11-16 lb.ft.)
2. Connect knock sensor wiring harness connector to the knock sensor.
3. Connect negative battery cable.