Looking for an update? Skip the phones, check your order status online.
Ignition Knock Sensors monitor vibrations caused by engine knock or detonation.
A piezoelectric crystal generates a varying voltage based on engine vibration intensity, and sends a signal to the ECM. The vehicle computer then adjusts ignition and valve timing or injector pulse width for optimal engine performance.
At the engine block, threaded into the side of the block or under the intake manifold.