[torsen] Fw: Quattro "Wind-up" Problem

urq urq at pacbell.net
Wed Oct 24 11:13:01 EDT 2001


... well, here's something I posted to the list some time back ... Funny I
don't remember seeing your post to the V8 list, but I could very well have
missed it ...

Steve Buchholz
San Jose, CA (USA)


> What is happening is that you are experiencing your rear Torsen diff in
> action.  In a sharp turn each rear tire covers a significantly different
> distance travelled.  The Torsen sense this as slippage and will tend to
> lock.  The smooth pavement surface causes the outside wheel (the one the
> Torsen "thinks" is slipping) to get less power while more is sent to the
> inside wheel.  This effect should only be noticed with power applied.
>
> Anyone who has driven an earlier generation quattro with the rear diff
> locked would probably recognize the "feel" when this happens.  On my V8
when
> applying a lot of power in sharp turns I can feel a similar sensation to a
> locked rear diff ...
>
> Steve Buchholz
> San Jose, CA (USA)
>
> -----Original Message-----
>
> Is there anything other than bad front ABS sensors that could be causing
> a
> wheel/tire "wind-up" problem on my V8? When I back out slowly from my
> parking
> place, then cut the wheels sharply in either direction to go forward,
> the
> tires seem to skip and "wind-up" on the pavement, sometimes squealing
> wheels
> as they go. Last time this was caused by a faulty ABS sensor. It read
> out as
> a fault on the computer. But this time, not reading out. The sensors are
>
> staying in place, too. I just changed tires and, while the new 225
> series
> tires grab the road better, the problem still persists. Is this anything
>
> mechanical with the quattro system, or just more brake problems?
>
> TIA,
>
> Steve K.
> 1990 V8Q  138k
> Rockville, MD
>




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