i hear thumps when driving along rough roads

2000 PONTIAC FIREBIRD
64,000 MILES
Avatar
06LS2GTO
  • MEMBER
  • 11 POSTS
Sub-model is a firehawk Loud thump from drivetrain when rolling over small cracks in cement surfaces but doesn't happen when riding on blacktop surfaces unless i hit bumps wh
Dec 28, 2011 at 5:55 PM
Advertisement
Avatar
CARADIODOC
  • ✓Experienced Mechanic
  • 34,367 POSTS
You haven't included any symptoms or observations to work with so here's my best suggestion:

There is a tool you might be able to borrow or rent from an auto parts store that borrows them called the "Chassis Ear". It is a set of six microphones, a switch box, and headphones. You clip the microphones to suspect points, then drive around while listening with the headphones. You can move the microphones around to zero in on the source of the noise. Be aware that many mechanics have never seen or even heard of this tool. Suspension and alignment mechanics use it to find rattles, squeaks, and other noises.
Dec 28, 2011 at 6:23 PM
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.