1991 Audi 90 Quattro Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Audi 90 Quattro
1991 Audi 90 Quattro ProblemsInspect CV Boots and Joints at Each Service
Abnormal Noise From Suspension
Starting problems due to air leaks and fuel injection
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.
Problems with air leaks and the fuel injection may cause starting difficulties.