Need help w/ QSW diff's....

[Nate Stuart]

Dave, couple of points here...

1) The tranny that is in the Syncro wagons is the same that is in the Audi
4kq, if I recall correctly. This means that it is ALWAYS in AWD 'mode' there
is no FWD/RWD selection. The differential actuators are soley for the
purpose of LOCKING the differentials, not transfering power to or from.

2) pulling the diff lock towards the engine will engage the center diff lock
(again, if it is setup the same as a 4kq, and I believe it is). This will
force the front and rear sets of wheels to turn at the same speed, often
causes tire noise on tight paved corners....

Why yours is making noise with the diff unlocked I have no idea. Are you
sure that you had to pull the rod towards the engine?? It'd make a lot more
sense if instead the diff was locked the whole time while you were driving
it, then you had to cut the ziptie and unlock the diff, and upon putting it
in gear discovered that you had a shot front diff as opposed to the CV
joint, in which case that would really suck :(.

Just my .0002 cents

-Nate
'89 90tq
www.newtsplace.com/90tq

----- Original Message -----
From: <Audimobiles at aol.com>
Subject: Need help w/ QSW diff's....


>     1987 Quantum Syncro
> Alright, this is driving me nuts...When I bought the car the middle diff
was
> ziptied so the car would only operate in RWD. Reason for this was because
of
> a bad front passeneger side inner cv joint and I had to drive it a bit
before
> I could actually do the repair. Sine then,  I've taken out the whole ps
> halfshaft and replaced it with a known good one from an '86 4kq. Okay, all
is
> good time to put the car in AWD. I found the ziptie, cut it, and pulled
the
> rod towards the engine to disengage the differential (the diff controls in
> the car don't operate, yet). After this when I put the car into gear,
befor
> even letting out the clutch there is a bad sounding clink, clink, clink
sound
> coming from the front axles. If I even try to fully put it in gear the
sound
> gets faster and more violent. I've tried pulling the rod for the diff in
and
> out, it'll go back to RWD and them go back to the clinking sound, what
> gives....I'm starting to think the bad cv joint may be on the drivers
side.
> I've tried searching the archives but nothing comes up directly related to
> this situation. Any idea's? Thanks again.
>
>     Dave Farrer
>     '90 V8Q (sold, gone today) :(
>     '87 QSW
>