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Old 01-02-08, 09:47 PM   #1
pimpdriver
Devon Pastie Muncher
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Join Date: Jul 2007
Location: Calne Wiltshire
Posts: 7,530
Default Audi 100 brakes problem

hi,

Audi 100 2.3 quattro avant, G reg.

The brakes were a bit ropey and was pulling to the left under braking, so I had the following done yesterday:

new front discs (Brembo)
new front pads (ATE)
new rear pads
1 NSR caliper
fluid changed

The garage reported that the OSR caliper was sticking slightly, and the NSF caliper was hard to get back in, but went back in with some coaxing.

I drove it 100 miles, bedding the brakes in gently. On the motorway today it felt down on power, so I pulled into the services and stopped, without using the brakes at all. The rear discs were too hot to touch, the fronts were cold. I thought it was something to do with the handbrake cable.

And getting closer to work it dove to the left under braking again and when I stopped, that wheel was hotter than the other side.

I took it back to the garage and they released the handbrake cable on the OSR (as it was sticking, a new one is on order). They then replaced the NSF flexible hose, as they thought it was kinked and not letting the caliper return.

However, after a test drive, and a very good bleed of the system, the NSF caliper was still sticking. The only way to release the caliper was to undo the union on the ABS unit leading from the caliper to the ABS unit (I watched them do it).

On the 50 mile trip home, I pulled into the services again, not using the brakes this time. When I touched the discs (carefully!), the NSF was cold (bizarre!) but the other 3 were hot!!! ) even though the NSR had a brand new caliper on it........

What is going on?

Shall I replace the other 3 flexibles and see what happens? (I want to try and eliminate simple things 1st).

Is it (as the garage suggested) the ABS unit (I don't think it is).

Any other thoughts?

Cheers,

Steve
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