The water pump may fail resulting in engine overheating and possible timing belt damage. Overheating and/or timing belt failure can result in very expensive engine repairs. As a precaution, it is recommended to inspect the timing belt and water pump at regular intervals.
Inspection of Water Pump and Timing Belt on Audi 100
Average mileage: 160,000 (160,000–160,000)
Engine affected: 2.8L V6
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car gets hot no heat in heater. whe.n water gets hot I hear a thumping noise. soon after water wants to boil over. water don't seem to move through