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

1998 CHEVROLET PRIZM
38,000 MILES
Avatar
LARRY GUNN
  • MEMBER
  • 1 POST
when driving you can hear a low noise, as you let off the gas it gets louder.
Feb 17, 2012 at 12:36 AM
Advertisement
Avatar
HMAC300
  • ✓ASE Certified Mechanic
  • 48,601 POSTS
  • ASE Certified Mechanic
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
Avatar
RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
What kind of noise are you hearing is it a tapping, ticking, thumping and thudding noises?
Feb 17, 2012 at 12:48 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.