Date: Tue, 16 Jul 2002 15:50:35 -0300 From: J Dexter <webmannnopsamdress.org> Subject: Re: 1993 900S brakes question: thunking sound
Salutations: Check your engine mounts - which will be totally unrelated to your brakes - but will produce a deffinate thunk when you apply the breaks every so often.. your pal J Dexter http://www.dexterdyne.com Tim Romano wrote: > > A local repair station, not SAAB specialists but with a decent > reputation, recently replaced the rear brakes on my 1993 900S. After the > installation, dark sooty smelly smoke was emanating from the rear wheels > and the emergency hand brake was so loose it wouldn't keep the car from > rolling. I took the car back and they made some adjustments which > eliminated both of those problems, though they claimed to have been > unable to reproduce the smoke. > > A few days have elapsed, and I've just taken the car on the road again. > After driving the car in hot weather for half an hour, in stop-and-go > traffic, a noise has developed that I've never heard before, and I've > owned the car since it was new and have put 135,000+ miles on it. When > coasting in a parking lot going about 20mph, with my windows open, when I > very lightly put my foot on the brake pedal, depressing it only half an > inch or so, such that the car does not actually slow down, there is a > single THUNK! that seems to come from under the car. This THUNK! sound > happens once each time I touch the brake pedal very lightly in this > manner. It does not occur immediately when I start to drive but after > about 20 minutes or half an hour. > > I'm going to take the car back in, but what might be the cause of this > THUNK sound? > > Thanks > Tim Romano
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