1991 Audi Coupe Quattro Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Audi Coupe Quattro
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1991 Audi Coupe Quattro ProblemsInspect CV Boots and Joints at Each Service
Various bushings—located around the subframe, suspension, and steering—deteriorate with age. A clunking noise when driving over bumps, accelerating, or stopping may be a sign of worn bushings.
1991 Audi Coupe Quattro Questionshydro boost brake system (1 answer)
I have a problem with the brake system I replaced the brake accumulator and the master cylinder, but the brake pedal is hard and difficult to stop, I haved to press hard and lock the brakes up, so vibration from the anti-lock system occurs. This is a hydro boost brake system so the boost comes fr...