

Video
VIDEO: Engine Knock Sensor Problems
The greater the vibration or shock, the higher the voltage and frequency. This video is sponsored by NGK Spark Plugs.
The greater the vibration or shock, the higher the voltage and frequency. This video is sponsored by NGK Spark Plugs.
Knock sensors are mounted on the block near the base of the cylinder head.
The knock sensor is a piezoelectric accelerometer that acts as a microphone on the engine. It converts vibrations into an...