[Biturbos4] differential thump

T Stifler tstifler at att.net
Mon Dec 25 08:44:40 EST 2006

Great - I'll inspect the mount.

-----Original Message-----
From: dap128 [mailto:dap128 at hotmail.com] 
Sent: Friday, December 22, 2006 11:25 PM
To: tstifler at att.net; biturbos4 at www.audifans.com
Subject: Re: [Biturbos4] differential thump

There is a rubber/metal dampening mount on the front of the rear diff.  The 
rubber can tear and cause the diff to move more than normal, which in turn 
causes the driveshaft flange to hit the underbody.

The replacement mount can be had from online retailers for about $170.

-Dave Pramanik

----- Original Message ----- 
From: "T Stifler" <tstifler at att.net>
To: <biturbos4 at www.audifans.com>
Sent: Friday, December 15, 2006 5:22 PM
Subject: [Biturbos4] differential thump

> Hello folks,
> I have an 02 Tip - under initial hard acceleration (1st or 2nd gear) there
> is firm thump sound and feeling coming from rear diff.  After one thump, 
> it
> seems to "seat" itself and I can not make it reoccur until 40-50 miles of
> casual light driving (normally next day or so when I punch it).  If I ease
> into it a few times, it will seem to be ok, w/no thump.  Could there be
> something wearing out in the differential ? Any idea ?  I recall this
> feeling a few times over past couple years, but it's becoming the norm 
> now.
> Merry Christmas, Happy Holidays everyone.
> TS
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