Rear passenger side noise

Tiny
THERESA BOYKIN
  • MEMBER
  • 2009 CHRYSLER ASPEN
  • V8
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
Some times it sounds like you have a flat tie on the rear passenger side thump thump thump them it stops as quik as it started.
Wednesday, June 5th, 2019 AT 2:42 PM

3 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,573 POSTS
Welcome to 2CarPros.

Hi Theresa. Is there anything you can think of that may prompt this to happen? For example a bump, turning, accelerating or decelerating? Are you certain the wheel is tight?

I ask because there are so many different things that can make a thumping sound. There are rubber bushings, strut mounts, a flat spot on a tire, a bad shock and so on.

To get started and try to narrow this down, here is a link that discusses different causes of such noises. Some of the things listed are specific to the front, but others are not.

https://www.2carpros.com/articles/popping-noise

Now, if you feel a vibration when this happens, check the right rear shock to see if it is leaking and bounce the vehicle on that side to see if it seems weak. If the vehicle continues to bounce more than three times when you stop, the shocks should be replaced.

I attached a picture of what to look for as far as a shock leaking. If you find this is the issue, here is a link that shows how to replace them:

https://www.2carpros.com/articles/replace-shock-absorber

_______________________

Let me know if this helps or if you have other questions.

Take care,
Joe
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Wednesday, June 5th, 2019 AT 8:35 PM
Tiny
THERESA BOYKIN
  • MEMBER
  • 2 POSTS
Sometimes it will also make the noise when it is setting still like something is turning and hitting something.
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Thursday, June 6th, 2019 AT 8:28 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,573 POSTS
Welcome back:

Are you sure the exhaust system isn't coming loose and hitting under the vehicle? Do me a favor. Take something like a rubber mallet and tap on the exhaust to see if you can mirror the sound. Inspect the rubber hangers that hold the system on the vehicle. It isn't uncommon for them to break or even the hook they attach to break.

If you hear it when not moving, I have a feeling that is what it is.

Let me know.

Joe
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Thursday, June 6th, 2019 AT 7:10 PM

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