Icurrently have an 01 GTI VR6 and now want an Audi A4 with the 1.8T and 5-speed manual. So I was wondering, how reliable is the B5 A4 1.8T after 90,000 miles? What have you guys had to get replaced after 90,000 miles? How much did it cost to get done? I've got two mechanics that own their own shops, so I don't have to worry about Conclusion Audi A4 AC Not Blowing Cold. These are a few of the most common issues that could cause your A4 not to blow cold enough. However, there are other issues that can cause this as well. Most of the time, when your A4’s air isn’t blowing cold enough, it is going to be a lack of refrigerant causing the problem. Hereare the most common A4 P0456 fixes: Gas cap replacement. EVAP line replacement. Replace charcoal canister. Purge solenoid. Of all the items listed above, it would be wise to start with the gas cap and work your way to the fuel tank since the gas cap is far and away the easiest and least expensive item to replace. Youmay need a small screwdriver for this, and be prepared to have fuel leaking out. Head Gasket Head gaskets can be a cause of overheating, oil consumption or coolant in the oil. I have only heard of one case of a head gasket failure on a 1.8T and it was on a car running 30 lbs of boost and used head bolts. Ourlist of 15 known complaints reported by owners can help you fix your 1999 Audi A4 Quattro. Close. Problems / Audi / A4 Quattro / 1999; 1999 Audi A4 Quattro Problems. Find the most common issues based on car owner complaints. Get Your Car Fixed. Find a high quality auto repair shop or dealer near you. View Nearby Shops . Report a Problem

REPAIR- If fault code (s) is present, install new heaters. Audi A4 B8 3.2 FSi. PROBLEM - Unusual noise from the engine coolant pump space at idle. CAUSE - Air in the cooling system. REPAIR - Bleed the cooling system several times. Start the engine. If noise is still present: Replace the engine coolant pump.

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audi a4 b5 common problems