HELP!!! Rear Diff Problem?

[The Quattro King]

Another thing that has happened to me is  the exhaust brackets get bent up
and when cornering the whole exhaust system hits things.  Just a guess???

Shayne P.



1972 MB 280 SEL
1984 4ksq
1991 v8q5
1991 200q Sedan
1992 S4

Parting:  1972 Mercedes Benz 280 SE 4.5

> From: "Fred Munro" <munrof at sympatico.ca>
> Date: Mon, 22 Jan 2001 19:42:49 -0500
> To: "Jason Stone" <jason_r_stone at yahoo.com>, Audi List <quattro at audifans.com>
> Subject: Re: Re: HELP!!! Rear Diff Problem?
> 
> Hi Jason;
> 
> The lever is external on the outside of the diff. It has a vacuum motor
> attached to it. Maybe the vacuum hose was pulled off when you got stuck.
> 
> Fred
> 
> ----- Original Message -----
> From: "Jason Stone" <jason_r_stone at yahoo.com>
> To: <munrof at sympatico.ca>; "Audi List" <quattro at audifans.com>
> Sent: Monday, January 22, 2001 8:58 AM
> Subject: RE: Re: HELP!!! Rear Diff Problem?
> 
> 
>> 
>> As an aside to the msg I just sent you - it did work
>> perfectly (the diff lock and the switch) up until I
>> got stuck in the ditch.
>> 
>> Maybe got jolted or broken by impact with ground?
>> 
>> Jase
>> 
>> 
>>> -----Original Message-----
>>> From: munrof
>>> Sent: Montag, 22. Januar 2001 14:27
>>> To: jason.r.stone; quattro
>>> Cc: munrof
>>> Subject: Re: HELP!!! Rear Diff Problem?
>>> 
>>> 
>>> Hi Jason;
>>> 
>>> If your diff won't unlock, it is usually because the
>> lock
>>> lever mechanism on
>>> the diff is corroded. The vacuum system can pull the
>> lever to
>>> lock the diff,
>>> but the return spring isn't strong enough to unlock
>> the diff.
>>> Get under the
>>> car and manually move the lever into the "unlocked"
>> position.
>>> Free up the
>>> mechanism while you are under there.
>>> The light goes out at 40 kph because the system is
>> designed
>>> to automatically
>>> unlock the diff at that speed. If the lock lever is
>> stuck,
>>> the light may go
>>> out (indicating the signal is sent to unlock the
>> diff) but
>>> the diff may stay
>>> locked.
>>> If you are driving at 140 kph with a locked rear
>> diff you
>>> will ruin the
>>> diff. The car is also unstable because, as you have
>> noted,
>>> turning with a
>>> locked rear diff causes one or both wheels to skid
>> around the
>>> turn - the
>>> wheels want to rotate at different speeds as you
>> turn but the
>>> locked rear
>>> diff keeps them rotating at the same speed. This is
>> why your car feels
>>> "nasty" when you turn.
>>> Get the diff unlocked before you drive the car. The
>> clicking
>>> noise may be
>>> due to diff damage - there's a lot of stress on a
>> locked diff
>>> when turning
>>> at high speed.
>>> 
>>> Good luck!
>>> 
>>> Fred Munro
>>> '94 S4  122k km
>> 
>> 
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> 
>