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)

Or, hide this message: temporarily or permanently

Knock Sensor: Service and Repair

Knock Sensor Replacement:




Knock Sensor Heat Shield:






REMOVE OR DISCONNECT
1. Raise vehicle and support.
2. Right front tire and wheel.
3. Electrical connector at sensor.
4. Sensor at engine block.

INSTALL OR CONNECT
1. Sensor at engine block.

Tighten
Sensor to 19 Nm (14 lb. ft.).

2. Electrical connector at sensor.
3. Right front tire and wheel.
4. Lower vehicle.