kalium99 Posted January 27, 2006 Share Posted January 27, 2006 I have a bizzare vibration and sound coming from my rear end somewhere. Its a constant "thunk-thunk-thunk" that comes from just behind my shoulder and gets louder as the wheels turn faster. I have replaced my diff mount (which did fix the lound clunk sound that I used to get when taking off or slowing down) and have also replaced the wheel bearing on the side where the sound seemed to be coming from. Even if I cruise in neutral the sound and vibration are still there. I took it to a mechanic and he said the u joints seemed fine. Could it be unbalanced halfshafts or driveshaft? Could the u joints appear fine but really be screwed? Is it worthwhile to go to a junkyard and pull form halfshafts to see if they are any better than mine ? Then engine is the standard L series as well with an R200 diff. Cheers Ray Quote Link to comment Share on other sites More sharing options...
Pop N Wood Posted January 27, 2006 Share Posted January 27, 2006 try rotating your tires and see if the thump moves Quote Link to comment Share on other sites More sharing options...
fastzcars Posted January 27, 2006 Share Posted January 27, 2006 I would check 2 things, Look for dents in the driveshaft as well as the U-joints. And the wheels to make sure the balancing weights didn't fall off. BTW the drive shaft does have balancing weight as well. Quote Link to comment Share on other sites More sharing options...
Brad-ManQ45 Posted January 27, 2006 Share Posted January 27, 2006 Sure you don't have a flattened rim or tire? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted January 27, 2006 Share Posted January 27, 2006 Sounds like a U-joint to me... Quote Link to comment Share on other sites More sharing options...
kcelectronics Posted January 27, 2006 Share Posted January 27, 2006 Check your rear tyres for separation of the tread or bubbles under the tread (caused by air getting between the ply's of carcase of the tyre! Quote Link to comment Share on other sites More sharing options...
kalium99 Posted January 28, 2006 Author Share Posted January 28, 2006 No I have had this problem ever since I have had the car, and that involves a few tyre changes as well. Im also leaning towards a U joint, the only thing that makes me skeptical is that the mechanic I took it to is a zed guru and knows his stuff. He was actually a bit baffled, as the U joints felt fine. OH well, I have some new Uni's laying around so I will try putting them in and see how I go. Quote Link to comment Share on other sites More sharing options...
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