How much should it cost to replace a bad oil pump?
oil pump on 1991 Audi 200 Quattro
An oil pump alone is rarely the only problem with a car's engine. Verify actual engine oil pressure using a mechanical gauge. My labor guide says just over 4 hours labor, plus price of oil pump and check the engine bearings while you have that much disassembled. I remember the Audi/VW's had a lot of electrical problems with false oil pressure warning lights around that year.