[s-cars] For Sale -first gear noise

[Fred Munro]

To elaborate on Dave F's post, there are two "tranny noises" associated with
early UrS4 transmissions.

The first is the pinion bearing noise described in Dave's post. It is speed
related, independent of the gear the tranny is in, and when entering it's
terminal phase has been described as sounding like a jet engine during
take-off.

The second is first gear noise. As Dave mentions, it is caused by galling
first gear by over-enthusiastic use of the loud pedal while in said gear or
by spinning tires (on ice, snow, wet or dry asphalt) while in first gear. It
is only heard when the tranny is in first gear. Audi installed a wider first
gear in the late '95 cars to resolve this issue. The high performance Euro
cars (mit 6 speeds) got a hardened first gear set.

HTH

Fred Munro
'94 S4


-----Original Message-----
From: s-car-list-bounces at audifans.com
[mailto:s-car-list-bounces at audifans.com]On Behalf Of JR
Sent: April 21, 2004 12:51 PM
To: s-car-list at audifans.com
Subject: Re: [s-cars] For Sale -first gear noise


So is this noise all the time in first gear, or only when you first
start, only when shifting,  or only when you mash on it?

Just want to know what to look out for.

Thanks,

JR


Dave Forgie wrote:

>First gear noise is a high pitched whine from the pinion bearings of
>some early 92 spec cars (including the elmwood Canadian "93"s).  The
>preload on the pinion bearings was probably set too high at the
>transmission factory, causing the bearings to fail prematurely.  Many
>transmissions with this problem were changed/fixed under the original
>warantees.  A few may have escaped for later failure. At some point in
>late 93/early 93 they figured out the problem and not furhter failures
>of that nature occurred.  But then there is the first gear spalling
>problem (caused by too much horsepower applied too quickly, i.e. dumping
>the clutch).
>
>Dave F.
>
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