[s-cars] Driveline chatter-not fixed

[Sean Douglas]

Mark:

Sounds exactly like mine, but it only happens under *hard* acceleration in
1st or 2nd gear. I understand that as the engine tilts, it changes the angle
of the front CV. The grease inside the CVs tend to dry out and then wear is
inevitable.

The funny thing is that it did not do this until *after* I replaced the
engine mounts (Boge).

Try repacking the CV joints and see if the noise lessens or goes away. Also,
new CV joints are available from Porsche, the part number is 923.332.032.00

New CVs will require removing the driveshaft (drop the exhaust first) and
pressing out the old CVs. I'm told the rubber boots are not replaceable.

I'm going to try repacking mine to see what happens.

See this link for tips:

http://forums.audiworld.com/s4s6/msgs/145079.phtml

Sean Douglas



> -----Original Message-----
> From: s-car-list-bounces at audifans.com [mailto:s-car-list-
> bounces at audifans.com] On Behalf Of Mark Turczyn
> Sent: March 4, 2007 2:35 PM
> To: s-car-list at audifans.com
> Subject: Re: [s-cars] Driveline chatter-not fixed
> 
> 
> Well-
> 
> Mark Pollen kindly let me use his new Boge motor mounts  Installed
> them with no problem and unfortunately the chatter got louder.
> 
> Now it sounds like metal hitting metal and it seems to be near the
> rear when I roll the right windows down.  Does not do it cruising---
> just under acceleration in any gear.  Just bang bang bang like a
> small jack hammer.
> 
> It does not seem to do it on decell-- just every time you touch the
> gas-- let go and it stops.
> 
> This is not like any of the symptoms on Blau's site.
> 
> 
> I went under the car and grabbed the drive shaft the only place I
> could-- near the rear end.   I can rotate it back and fourth about
> 3/8 and it clangs.  I am not sure if this is too much since I have
> always feel some free play rotation in most driveshafts I have felt.
> 
> I did not have today to remove the heat shield to visually inspect or
> try to find the play.  I was too busy rebuilding my wife's A4 axle
> boots.  Audi repair never stops.
> 
> 
> I can also move the shaft side to side but not much and it feels like
> something inside is clanging with a space between them-- sort of like
> a lose spline shaft.
> 
> 
> Anyone feel this is just the center bearing or is it more like bad
> universal joints?
> 
> I see you can buy a complete rebuilt S driveshaft for about $418 at
> some websites and Blau wants $400 for just the rebuild kit.   Of
> course I do not have the Audi tool to set the driveshaft position up
> if I get a rebuilt shaft.  Blau says I can just mark the original
> spacing and use the existing shims if I use my original shaft.  I am
> not sure this completely makes sense.
> 
> I am not driving it until I figure this out.
> 
> 
> Any opinions?
> --
> Mark Turczyn
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