what would cause your car to knock when you let off the gas.

1998 CHEVROLET PRIZM
38,000 MILES
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LARRY GUNN
  • MEMBER
  • 1 POST
when driving you can hear a low noise, as you let off the gas it gets louder.
Feb 16, 2012 at 4:36 PM
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HMAC300
  • ✓Experienced Mechanic
  • 48,601 POSTS
it could be a lot of things, something loose in front end an engine noise, etc. best thing to do is have apro look at it as we can't hear noises here on the computer.
Feb 16, 2012 at 4:48 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
What kind of noise are you hearing is it a tapping, ticking, thumping and thudding noises?
Feb 16, 2012 at 4:48 PM
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