Rear end noise
Thread Starter
Safety Car
Joined: Jun 2005
Posts: 3,841
Likes: 0
From: Inver Grove Minnesota
Rear end noise
I have a clunking noise that repeats over and over again when I'm moving. All of the u-joints are new. Could the clutches in the posi be sticking? I did add limited slip oil.
Drifting
Joined: Apr 2002
Posts: 1,716
Likes: 4
From: New Baden Illinois
EDIT: If you did this, I have seen some forum members recommend going to an empty parking lot and driving in figure eights to get everything working properly.
Last edited by dgruenke; Apr 26, 2007 at 11:25 PM.
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Melting Slicks
Joined: Jul 2005
Posts: 2,740
Likes: 3
From: Aurora Ontario
You don't say exactly when you get the clunk. I had a similar problem. I replaced all the U joints but that didn't stop the clunk. It ended up being a little known rubber bumper at the top front of the differential. It had fallen off.
Jim
Jim
Melting Slicks
Joined: Dec 2006
Posts: 2,669
Likes: 3
From: Kingston Ontario
You said like a hitting sound?
Hitting/clunking noise may also be from a bent backing plate, parking brake mechanism misalignment or a number of things from the rear end area.
I would jack up the rear one side at a time, select neutral and spin the wheel by hand to eliminate each system. This will tell you if your problem is within the wheel ie, brakes.
You have to troubleshoot more.
- does noise remain constant in gear and while coasting?
- is noise constant while making large sweeping turn to right and left?
- does frequency of noise increase with speed of vehicle or eng RPM?
- is the noise a clunk, click, hit, whine?
Hitting/clunking noise may also be from a bent backing plate, parking brake mechanism misalignment or a number of things from the rear end area.
I would jack up the rear one side at a time, select neutral and spin the wheel by hand to eliminate each system. This will tell you if your problem is within the wheel ie, brakes.
You have to troubleshoot more.
- does noise remain constant in gear and while coasting?
- is noise constant while making large sweeping turn to right and left?
- does frequency of noise increase with speed of vehicle or eng RPM?
- is the noise a clunk, click, hit, whine?
Drifting
Joined: May 2006
Posts: 1,425
Likes: 0
From: Seattle Wash.
Thread Starter
Safety Car
Joined: Jun 2005
Posts: 3,841
Likes: 0
From: Inver Grove Minnesota
It was a u-joint. It was not properly secured. I took it to have it alligned. Everything is good now. Except for the leaky valve cover, I've re gasketed it so many times. It is cast alum so I don't see how it could be warped. It leaks all over my header wrap and makes a ton of smoke.
Last edited by JustinD; Apr 27, 2007 at 04:31 PM.