ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

Tune-up and Engine Performance Checks > < Functional|Page 3423
Page 1
background image

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.

Tune-up and Engine Performance Checks > < Functional|Page 3423