S1 4.2 Diff noise
#1 S1 4.2 Diff noise
Hi my S1 4.2 FHC USA spec has a serious noise, whine, when under power but silent on over run is it bound to be the Diff? any cure other than replace?
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christopher storey
- Posts: 5698
- Joined: Sun Mar 09, 2008 3:07 pm
- Location: cheshire , england
#2 Re: S1 4.2 Diff noise
Very likely indeed to be the diff . You need to get the rear cover off and see the marks on the crown wheel which show the tooth engagement. If you look in the knowledge base in the final drive section of the workshop manual, it has useful diagrams showing the significance of the tooth marks ( you probably will need engineer's blue to do it ) . It may be that the pinion is out of adjustment . You have checked the oil level, I hope , and that the correct EP oil is being used ?
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