[Biturbos4] S4 transmission tunnel shuddering, ding-ding noise
fxstm at uaf.edu
Tue Nov 14 15:00:25 EST 2006
On Nov 8, 2006, at 12:51 PM11/8/06, Steve Munk wrote:
> I stumbled on Blaufergnugen (blauparts.com), and though their
> website doesn't spell it out, I called them and found out they
> stock individual replacement parts for the S4 driveshaft (NO ONE
> ELSE does this):
> So for less than $200 including 2-day shipping, they're sending me
> a replacement end joint for the driveshaft which I'll have Young's
> install. Should be here on friday, and Young's will probably be
> able to get it swapped on by the end of the day monday. Sigh. Hope
> that fixes it...
Thought I'd send a final update on the driveshaft problem. The
replacement end joint for the driveshaft was dropped off by FedEX at
quarter to 5 on friday. The part including shipping and gaskets was
only about $155. The late delivery meant I had to wait until monday
to get it to the driveline shop. The shop charged me $37 to install
the new joint and repack the other end with new grease. Not bad!
I think I've figured out a probable cause of the joint failure. There
are gaskets that are supposed to be at each end of the driveshaft.
There are indentations in the faces of the differentials at each end
that are designed for the gaskets. Whoever installed the 2004
driveshaft on the car didn't install the gaskets on either end, which
probably introduced some slop. This may have led to premature failure
of the rear joint. Primitive ASCII art which requires a non-
proportional font follows: :D
Diff Driveshaft Diff
Gaskets go Here and Here
Because an ignorant shop didn't install two $4 gaskets, a less
persistent person would have been stuck with replacing a $1200
driveshaft, plus shop time. The previous owners are so lucky it
didn't fail on their trip up the Alcan last month! I'm grateful to
the nice lady at Blaufergnugen for suggesting I buy the gaskets.
I installed the driveshaft back on the S4 last night and experienced
nothing but wholesome Audi goodness when I took it for a test drive.
Problem solved. What a relief! Stevo is happy again.
Block heaters aren't available for the 2.7T for some reason (we found
that out with the A6). To winterize the S4 last night I installed a
150w oil pan heater and a 2 amp battery charger. Apparently the 2 amp
charger is how all the cool kids are keeping batteries warm nowadays.
Reportedly doesn't cook them as bad as heating pads.
I have VAST short shifters on the way for the S4 and the A6.
HPC Systems Analyst '01 Audi S4 biturbo, silver 6-speed
Arctic Region Supercomputing Center '01 Audi A6 2.7T, gold 6-speed
University of Alaska Fairbanks mailto:fxstm at uaf.edu
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