Kevin Vandevenne

iTrader: (3)

I have been getting a clunk coming from the rear end for a couple of months now. So far I have replaced the u-joints, balanced driveshaft, checked/tightend up all bolts in back suspension, changed diff fluid and added posi additive. I am 99% sure it is not the transmission mount, I've had them go before and this is a different clunk.

Problems occurs mainly on decelleration, going around corners, or the 1-2 upshift. Car is a stock 91 GTA, 5.7 auto, G80 rear. This morning, I had the car jacked up, and if it turn the wheels (either one) by hand, I can reproduce the clunk. Sounds like it is coming from the center section of the rear end. Any ideas what I might be looking at?

Edit - Should note, that when I changed the diff fluid 2 weeks ago, the old fluid and inside the rear end looked fine. Not sure if that helps or not.

Thanks
Kevin.

DuronClocker

iTrader: (1)

Drain fluid and rotate a tire then and see where it makes the clunk. You can look for a broken/heavily worn gear tooth around that area then where the gears mesh. I don't see this noise happening for long before your car is unusable, so this may not be the problem if its been happening for months, but you might as well check it out.