spring

[frankbauer@thevine.net]

alex sez:
>Ron Roth wrote:
>>There is a spring attached to the bottom of the tower underneath the car
>>with a bolt/nut to add more tension which appears loose and could be the
>clunker.
>>I slid it back as far as it could go but the spring is still loose.
>>I'm dumb so #1 what is this part/what does it control/do?
>>                  #2 As the spring is really "tired" can I get replacement
>>              easily at dealer or elsewhere?
>>Thanks   Ron Roth  Ithaca NY USA
>If that's what I think it is, it's the brake pressure regulator spring.  One
>end should be connected to the rear axle and the other end should go to an
>eyelet on the brake pressure regulator mechanism.  The regulator is there to
>lower the amount of hydraulic pressure applied to the rear brakes when the
>suspension is extended (i.e., less weight on the rear wheels due to nosedive
>so that they don't lock up.  On the 5000's, this is supposed to be installed
>under the left hand (drivers) side of the car, is it on the other side on th
>4k's?  That would make sense because the fuel pump and filter are down there
>on the 4k.  It could be that the regulator-to-body mount bolts have loosened
>up and it's rattling around...never heard that one before, or of that spring
>getting "tired", but...
>I'd imagine you can get one from a dealer, try Linda at Carlsen Audi on the
>vendor list.

list price on the spring is about $15
if the problem is a frozen brake pressure regulator, you're looking at $400

frank