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There is a "thug" sound that can be heard from.

Tiny
ANONYMOUS
  • MEMBER
  • 2007 MITSUBISHI LANCER
  • 70,000 MILES
There is a "thug" sound that can be heard from under the car while on a rough road. I already had the ball joints replaced. I was convinced that it was the cause when I saw it moving freely after taken out from the car. However, when I tested the car, noise reduced but I can still hear a thug sound from under. What can possibly be the cause of this? Thanks in advance.
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Monday, October 29th, 2012 AT 2:57 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Didn't the mechanic notice the noise was still there during the final test drive after the alignment?

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.
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Monday, October 29th, 2012 AT 3:11 AM

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