[Biturbos4] S4 transmission tunnel shuddering, ding-ding noise

[Single Malt]

Welcome to the list Steve.  And congratulations on
your new S4 ... sounds like a nice one.  I've made
some comments on your issue inline below.  I've not
heard of driveshaft problems, but have heard of some
differential problems.

--- Steve Munk <fxstm at uaf.edu> wrote:

<snipped>
> Still
> squishes me and  
> two passengers into our seats once the traction
> control decides it's  
> ok. 
<snipped>

Try temporily defeating the ESP to get going a bit
quicker (and more fun) in slick conditions.


<snipped>
> I put the S4 up on 4 jackstands again and did some
> more  
> troubleshooting. I tried having my fiancee start the
> engine and bring  
> the wheels up to speed (just above idle in 4th gear
> was necessary to  
> get the unloaded rear end spinning fast enough) to
> get the vibration  
> and sound to happen while I (cautiously) watched the
> driveshaft  
> below. 


O-kay. (shuddering at the thought) :)


> Looks and sounds to me like the shuddering is
> coming from the  
> driveshaft and the ding-ding-ding sound is coming
> from *inside* the  
> rear half of the driveshaft! If I rap it with my
> knuckles (engine  
> off!) I can get it to make the same "ding" sound I
> hear when driving  
> the car. Is there something inside the hollow
> driveshaft that could  
> have broken loose?


Is it possible that the sound was coming from the rear
diff?  Maybe even transmitting through the drive
shaft?


<snipped>

Good luck with your troubleshooting and let us know
what you find out was the cause.

--
Steve
'01.5 S4 Sedan
'03 A4 3.0 Sedan
'87 4000 CSq (f'in sweet, baby)
Garaged at 9200ft
just outside Denver, CO



 
____________________________________________________________________________________
Do you Yahoo!?
Everyone is raving about the all-new Yahoo! Mail.
http://new.mail.yahoo.com