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
If it fails: lemon-manuals.org.ua

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Knock Sensor: Locations

Knock Sensor Location:





The knock sensors are located on the front of the engine block. Sensor #1 between cylinders 1 and 2, and sensor #2 between cylinders 3 and 4.