clutch or transmission

[Peter Golledge]

Nick,

I'm glad you found the issue.  I would not say that the Sachs clutches fail
often (at least on 5000/200 Audis).  I have three originals which have run
until the car has 200K miles or so.  I'm abusing a standard Sachs friction
disc in an LT-1 powered 5000 with a performance pressure plate.  This has
nearly 7 years of track abuse with a 400ft/lb motor and is still holding up
just fine.

I'd put a fresh Sachs friction disk and expect it to outlast the car for all
but the most dedicated audi nut. :-)

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of Nick Lawrence
Sent: Saturday, October 31, 2009 3:00 PM
To: quattro at audifans.com
Subject: Fw: clutch or transmission

    I think I have found the problem!!!    I pulled the trans and removed
the clutch pressure plate.  The friction disc was damaged. It appears the
material on one side broke, a few near by rivets broke, and the friction
material would swing outward. Like a brake shoe pivoting from one end.
    The would explain why depressing the clutch pedal at speed wouldn't
disengage the trans.  The friction material had swung out and made contact
with the pressure plate basket.  And also why revving the engine at that
point would speed up and unlatch the friction material.
    Haven't got it all back together for a test but pretty sure it will
work.

    So someone on Motorgeek suggested the Sachs clutch disc and said they
fail often.  I have never had one fail before nor heard of chronic failing.
What's the opinions on this?
    And the parts guy said it was an over -rev failure.  I do not remember
an over rev but it may have happened.  I wouldn't think this would be the
first component to fail on my ole' tired 260k motor.

Thanks for all the support.
Nick  central Ohio

----- Original Message ----- 
From: Nick Lawrence 
To: quattro at audifans.com 
Sent: Friday, October 23, 2009 8:07 PM
Subject: clutch or transmission


My '90 200 tqa with 261k miles is having a problem shifting.  I'll try to
describe conditions.

I can press the clutch and put it in gear, 1st or reverse and move off
slowly and press the clutch and stop.

I run it up normally in 1st gear, press the clutch to shift and it won't
shift, just like I didn't press the clutch.
The car also slows down as I have lifted off the throttle, just like it
would do if one didn't press the clutch.

Same will happen if I can struggle up thru the gears. 

As I try to shift with the clutch pedal pushed and the throttle off the car
slows,  sometimes a little jerky.  However if I apply throttle the engine
will speed up like a slipping clutch.

At a standstill I can shift into any gear.  I can hold the clutch pedal down
for extended time and the car doesn't start to creep.I can still put it in
gear.

I do not notice any difference in the pedal feel.

The problem seems to be related to the car moving.

Clutch pressure plate, disc, throw out bearing, pilot bearing have 11k
miles.

So, what failure in the trans could cause this?  What  are symptoms of
failing torsen? 

Looking for some good explanations or WAG.

I'll ask trans swap questions in separate post.

Nick  central Ohio
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