Loud thump or clunk!
Thread Starter
Heel & Toe
Joined: Jun 2006
Posts: 15
Likes: 0
Loud thump or clunk!
I have a loud thump or clunk sound coming from the rear somewhere, not all the time just periodically.
Does someone have an answer or idea of what it could be?
It only seems to do it when I’m pulling out.
Thank you,
John
Does someone have an answer or idea of what it could be?
It only seems to do it when I’m pulling out.
Thank you,
John
Le Mans Master
Joined: Nov 2001
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From: LONG ISLAND
2025 C3 ('68-'73) of the Year Finalist - Unmodified
2024 C3 of the Year Finalist - Unmodified
2023 C3 of the Year Finalist - Unmodified
The rear diff carrier snubber bushing is often the frequent culprit in the rear
1967 Pedal Car Champion
Joined: Mar 2020
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From: US-PNW
- What model year and transmission (auto vs. 4 speed)?
- What condition are the tires in? Unusual tread wear patterns?
- Detail under what conditions the thump makes itself known:
- If automatic, when shifting into gear from park?
- Acceleration, coasting, braking?
- Turning left, right, both?
- Any known service to the driveline components?
Last edited by barkingrats; Oct 2, 2021 at 12:44 AM.
Melting Slicks
Joined: Nov 2006
Posts: 3,411
Likes: 1,821
From: Apple Valley, MN
Agree with other posters that the front differential mount snubber is a likely culprit.
Have you checked the fluid level in the differential?
If your car is a 73-79 vintage, check the side play in the differential axles.
Find a parking lot and do some slow, tight figure 8s, both left and right. If no noise during this exercise, then you can likely exclude the posi unit.
Have you checked the fluid level in the differential?
If your car is a 73-79 vintage, check the side play in the differential axles.
Find a parking lot and do some slow, tight figure 8s, both left and right. If no noise during this exercise, then you can likely exclude the posi unit.
Thread Starter
Heel & Toe
Joined: Jun 2006
Posts: 15
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Melting Slicks
Joined: Feb 2017
Posts: 3,232
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From: PHX AZ
John...to help yourself....use the SEARCH BUTTON....I realize you're new here....That is the most POWERFUL button on the whole site.
I would presuppose this topic has been covered close to 1000 times.
Unk
I would presuppose this topic has been covered close to 1000 times.
Unk
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