1997 Pontiac Grand Am Knock Unit

Tiny
DEBBY1964
  • MEMBER
  • 1997 PONTIAC GRAND AM
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 73,246 MILES
What is the purpose of a knock unit and what does it do does it pertain to the oil
Friday, August 7th, 2009 AT 3:58 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
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.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Sunday, August 9th, 2009 AT 8:57 AM

Please login or register to post a reply.

Related Noise Knock Content

VIEW MORE

Sponsored links