[Biturbos4] A whine from the rear
glenahan at vfemail.net
Thu Jul 13 19:03:33 EDT 2006
your guesses seem reasonable. Never heard of it at this mileage. Check
the diff opil level?
On Jul 13, 2006, at 7:57 AM, Chris Newbold wrote:
> No, no, not from my son in the back seat :)
> Just shy of 65k miles, and I'm starting to notice a whine originating
> somewhere in the rear. The whine...
> o is loudest between 65-70MPH
> o is unaffected by gear: 3rd, 4th, 5th or 6th and the pitch is
> o is unaffected by steering inputs
> o is strongly correlated to throttle inputs:
> - it stops if you gently lift and coast
> - it stops if you dip in and accelerate
> - it returns in steady cruise
> The only things which satisfy all of these observations are:
> o rear differential
> o center drive shaft bearing (do the B5s even have these?)
> I haven't heard of any premature differential failures in the B5 S4,
> it's not like it's very highly stressed (compared to some other
> comonents). But, hey, there's always a first time.
> Anyone have any thoughts or comments?
> Keman, I don't know if you're still around, but did you see any such
> failures during your time in the shop?
> 2001.5 S4 Avant 6spd
> Biturbos4 mailing list
> Biturbos4 at www.audifans.com
More information about the Biturbos4