Rear End Clunk

Duncan Thomson duncan at systemcontrols.co.nz
Thu Sep 18 17:07:21 EDT 2003


I've got the same issue with my '85 CQ, and like you I have been leaning
towards the possibility of it being a diff problem as there appears to
be a lot of slack there. In my case it happens with even relatively
light accel / decel, harsh use makes it sound like I'm going to leave
half the car behind...!

Have worked through diff mounts, checked ball joints, tie-rod ends etc...
will check the rear subframe this weekend when I plan to have the rear
shocks off anyway.

Be interested to hear if you find the culprit... and I'll be sure to
post if I find anything...

cheers
Duncan
'85 CQ

Robert M. Shydo Jr. wrote:

>Been getting a clunk in the rear of the 5kqt on transition from coasting
>to power and vice versa since shortly after I got the car.  Thought it
>would be a loose rear subframe bushing, but after crawling under the car
>and playing with stuff that doesn't seem to be the case.  In gear with the
>parking brake engaged, the shaft will turn about 15 degrees then stop.
>U-joints are fine.  When driving hard, the sounds almost is like hitting
>an aluminum baseball bat with a rock.  Thinking it must be the rear diff?
>
>Rob
>
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