Originally Posted by lilngineer
What might be the problem in the rear diff?
BTW- I am mostly the mechanic on this one. The shop just took a free look at it for me on Saturday. (I also quickly took a look at the front drive shaft while on the lift. I asked him at that time if ge noticed anything else and all he commented on was the front brakes and a slight rear main leak.
I also asked about u-joints but he said they would be vibrating like crazy if they were the problem.
I would not rule out U-joints, Upper tri-link or lower control arm bushings, gear lash in the diff or anything for that matter.
Can you try to coast on a flat road and try to punch it. Then get up to the same speed in the same gear then Very lightly touch the gas (just enough to know when the engine is pushing the car a tiny bit) then punch it.
Then do the same thing leaving the corner into traffic kind of thing both ways.
Is it only one clunk Every time it does it. Can you feel it?
Usually a thump or thud description is more of a bushing or shock kind of thing (control arm or tri-link) and a bang or clank, loud crack could be more driveline, U-joints, ring and pinion lash etc,,,
It's really a crap shoot in my opinion right now given the current description.
Abuse the GO PEDAL
2006 gasser, Frankenlift, moab's, 245/75 KM's, JL Audio, Black windows.
1978 CJ5 304, T18, Dana20, Detroit locker, MSD, Edelbrock, etc,,,