1997 Pontiac Grand Am Repair Question
Topics covered: Engine, Jack, Knock sensor.
Mileage: No information provided.
Mileage: No information provided.
Asked on August 7, 2009
1997 Pontiac Grand Am Knock Unit
Engine Mechanical problem
1997 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic 73246 miles
What is the purpose of a knock unit and what does it do does it pertain to the oil
1997 Pontiac Grand Am 6 cyl Front Wheel Drive Automatic 73246 miles
What is the purpose of a knock unit and what does it do does it pertain to the oil
Asked by Debby1964Answer
Replied on August 9, 2009
If you are talking about a knock sensor? It screws into a water jacket and like a microphone listens for any pinging or pre-ignition. If it detects is it will tell PCM to retard timing anywhere from 1-15 degrees, to prevent damage to engine.
