Diff Questions
Discussion
Hello all,
I've got a couple of questions and symptoms to describe which are worrying me about my Chimaera's Diff. Car is a '98 450 with 54K on it. I've searched back through all the diff related threads but I'm still confused!
- Car has a slight clunk from back end when pulling away.
- This is especially noticeable if moving from forward to reverse or vice versa.
- When pulling away with steering loaded, rear judders slightly as if the diff won't let the rear wheels turn at different speeds.
- Once moving the problem disappears and there's no whining or grumbles at speed.
Previous threads suggest bushes and mountings as prime candidates here but I'm concerned by the rear judder that it's something more sinister. What should I check first? Can I do any checks on ramps or would it be better to remove any weight from the back wheels with axle stands?
Well didn't intend to ramble on but scared of another big bill!
Thanks for any pointers
Robin
I've got a couple of questions and symptoms to describe which are worrying me about my Chimaera's Diff. Car is a '98 450 with 54K on it. I've searched back through all the diff related threads but I'm still confused!
- Car has a slight clunk from back end when pulling away.
- This is especially noticeable if moving from forward to reverse or vice versa.
- When pulling away with steering loaded, rear judders slightly as if the diff won't let the rear wheels turn at different speeds.
- Once moving the problem disappears and there's no whining or grumbles at speed.
Previous threads suggest bushes and mountings as prime candidates here but I'm concerned by the rear judder that it's something more sinister. What should I check first? Can I do any checks on ramps or would it be better to remove any weight from the back wheels with axle stands?
Well didn't intend to ramble on but scared of another big bill!
Thanks for any pointers
Robin
Hello all,
I've got a couple of questions and symptoms to describe which are worrying me about my Chimaera's Diff. Car is a '98 450 with 54K on it. I've searched back through all the diff related threads but I'm still confused!
- Car has a slight clunk from back end when pulling away.
- This is especially noticeable if moving from forward to reverse or vice versa.
- When pulling away with steering loaded, rear judders slightly as if the diff won't let the rear wheels turn at different speeds.
- Once moving the problem disappears and there's no whining or grumbles at speed.
Previous threads suggest bushes and mountings as prime candidates here but I'm concerned by the rear judder that it's something more sinister. What should I check first? Can I do any checks on ramps or would it be better to remove any weight from the back wheels with axle stands?
Well didn't intend to ramble on but scared of another big bill!
Thanks for any pointers
Robin
You probably found my thread then ... I had the 'resistance' feeling when pulling away when the diff was hot - even after the rebuild. I'm now out of pocket another few hundred bob for a replacement crown wheel and pinion - about the worst it could get really.
The clonking could well be the bushes - any decent garage will tell you. Otherwise, it may be more seriosus - 3-4hrs labour to remove/install the diff and 300-400 pounds for the rebuild is what I've been told ... my rebuild cost 550 pounds + 400 for the crown wheel and pinion, plus a few bushes, plus carriage of the diff to/from the reconditioner, plus a month delay getting it rebuilt a second time, plus VAT ... not cheap, but it's the only big job I've had done in the last 20,000 miles - since the camshaft needed doing at 28,000miles. Who said Chimaeras are always easy and cheap to run? Glad I've got a day-to-day car.
BTW - nearly 5 years of ownership and the only time it's left me stranded was a flat battery.
Good luck.
Trefor/.
Have come across same noises, dunno if yours gets more noticeable when hot?! but as a quick and cheaper option, try changing the diff oil.should be 80/85W-140ID gear oil. if your checking the bushes,the top rear bush should hardly move, but they tend to colapse completely or move excessively from side to side. hope all is ok.
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