My girlfriend's bucking problem...need help with her 4000

[Lundy, Andrew]

Sounds clutch related to me!!  Check the brake/clutch fluid.  Then look for
leaks at the slave and master cylinders.

That's what comes to my mind.
---
Andrew Lundy
90 80q
99 A6q

-----Original Message-----
From: Holman, Scott [mailto:sholman at ppg.com]
Sent: Thursday, November 15, 2001 11:17 AM
To: 'quattro at audifans.com'
Subject: My girlfriend's bucking problem...need help with her 4000


My girlfriend has a 1985 4000S Quattro with approx 140,000 miles.

For the past few winters, the car has developed what by girlfriend calls a
"bucking problem".  It typically occurs when starting out from a stop, but
has recently occurred at highway speeds.

Rather than me try to explain it, I've asked her to describe the problem in
her own words:

------------------------------------
Well...I'm not too sure what all has been replaced, though I know there was
some fuel line work done and I believe a fuel pump has been replaced, not
sure if it's the primary or secondary...which ever is cheaper.  The last
time when i was underneath it looking in that general area, i noticed
something labeled in the factory repair manual as the "accumulator" looked
to be original...all rusty and gross looking.

Every once in a while, she will buck in first gear when I start
out...sometimes so lurching-like that it actually hurts my neck and makes it
hard to keep my foot on the accelerator to pull out in an intersection.  I
usually just let off the gas and try it again.

Tuesday on my way home, I was in 5th gear going about 70mph and she started
bucking while I was going.  I was not in cruise control, and my foot was on
the accelerator.  I immediately let off the gas and downshifted to fourth. I
left my foot off the accelerator and my gear shift began flobbling in my
hand like crazy with the bucks.  When I came to a stop, i pulled out ok with
no bucks, but by third gear she was bucking again and the gear shift was
flobbling in my hand again.  I thought the tranny was coming lose and was
going to fall out. the weather was fine, around 55 degrees, and no rain. I
let her sit for a day and last night and this morning, she was fine.
------------------------------------

Let me know what you guys think.  Her car will be in the shop next week for
some minor suspension work, so I'd like to order any parts relatively soon.

Thanks,
Scott Holman
www.audi12v.com (my car!)