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
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when driving you can hear a low noise, as you let off the gas it gets louder.
Feb 17, 2012 at 12:36 AM
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HMAC300
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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 17, 2012 at 12:48 AM
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RASMATAZ
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What kind of noise are you hearing is it a tapping, ticking, thumping and thudding noises?
Feb 17, 2012 at 12:48 AM
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