How Do I Change a Knock Sensor in a 2000 Grand Am?
The knock sensor is a piezometric or pressure-measuring crystal located on the engine block. The knock sensor maximizes horsepower and fuel economy by registering the piston knock or slap and sending a low voltage signal to the onboard Computer. Most vehicles have four, six or eight cylinders. The piston knock occurs after each cylinder has detonated on the combustion stroke. The knock sensor registers the piston knock to adjust the amount of fuel mixture (air and gas), engine load and rotations per minute. The check engine light is a symptom of knock sensor failure.PreparationThe engine compartment contains multiple sensors such as the coolant sensor, air flow mass sensor, throttle body sensor and O2 sensors. To prevent accidental removal of the wrong sensor, check a shop manual or online photograph to see the knock sensor for the 2000 Grand AM.ToolsChanging the knock sensor is a difficult task that requires simple tools. Have a work bench available to arrange tools and parts. Purchas
