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: Description and Operation
The
knock sensor is a tuned accelerometer on the engine which converts engine vibration to an electrical signal. The powertrain control module uses the signal to determine the presence of engine knock and to retard spark timing.
