Discover a wide selection of replacement Engine Knock Sensors at AM Car Parts. Our extensive range is sourced from top-tier auto parts manufacturers, ensuring quality and reliability. Simply input your vehicle's registration number or select the make and to find the compatible Engine Knock Sensors for your vehicle.
What is Engine Knock Sensors?
The Engine knock sensor is located on the engine block, cylinder head or intake manifold. This is because the function of this sensor is to sense vibrations caused by engine knock. The PCM uses this signal to alter the ignition timing and prevent detonation. It will compare this information with its preset tables to identify an engine knock or ping. If a ping is sensed it will retard the timing to protect the engine from this damaging pre-ignition. The knock sensor is a piezoelectric sensor that contains a piezoelectric sensing crystal and a resister. This crystal creates a small amount of voltage when shaken. This sensor takes advantage of this unique property.