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RE: Brakes sticking, when hot
I had this happen on my 885ksq, and I believe it just needed a new MC. Don't
have the shop records with me at the moment to verify; it was a local
mechanic, not an Audi dealer who fixed it. Brakes have been fine for 2
> -----Original Message-----
> From: Lino M. Valadas [SMTP:email@example.com]
> Sent: Wednesday, March 25, 1998 11:01 PM
> To: firstname.lastname@example.org; email@example.com
> Subject: Re: Brakes sticking, when hot
> >My brakes stick on, only when driving in stop and go type traffic, and
> >or hot weather. Car is 86 5KTQ. just bled and replaced fluid. Seems to
> >pass servo test per Benltey.Could it be the check valve on the bomb?
> >Should I rebuild, replace the servo?
> >Any btdt's?
> >Any help would be appreciated. do not want to go to a mechanic. The list
> >has helped me more than any mechanic ever has!
> Don't know what it is. I thought I had fixed mine, but today it came
> When it happened to my 86 5ktqw a couple of years ago, I went to my
> Audi dealer, and they said: " Oh yeah, it happens only to some cars we
> know what causes it but the only way to fix it is to replace both the
> and the MC" (not the engine). So I decided to diagnose it myself. Went
> the scrap yard and picked up a set from a 5ks, and did a swap with mine.
> Same problem. So I put my MC back but kept the replacement servo. Same
> problem. At the point for some reason I felt the fault was with the
> and kept replacing them. 3 servos later a found one that worked. It
> fine for two years. Today in stop-and-go traffic it happened again.
> it is the servo again. But I'm starting to wonder if it might be related
> the type of brake fluid I'm using or the age of it. My bomb is new BTW.
> next step is to flush the system with pentosin (brake fluid, not the stuff
> in the bomb) and see if that helps.
> I hope somebody else may be able to shed some light on this.
> 86 5ktqw