Idon't see many of these cars on the road, probably because people don't know about some of these common problems! I hope this short video helps. 113 Location. Glenrothes, Fife, Scotland. Oct 23, 2011. #2. They certainly arent as good on fuel. Perhaps 35mpg around town and 45-50 driving economically on the motorway for a quattro. These engines certainly have issues when compared with the 1.9. The two main ones are injector pump failure, and camshaft wear. A4 Overheating When Idling Causes and Solutions. 1. Low Coolant. While it seems counter intuitive, when your A4 is low on coolant may run ok with wind hitting the radiator, but when idling there’s just not enough coolant to properly cool the engine. Solution: Fill the radiator and coolant reservoir back up. Never do this when the engine is Problemwith your 1998 Audi A4? Our list of 14 known complaints reported by owners can help you fix your 1998 Audi A4. Close. Problems Problems / Audi / A4 / 1998; 1998 Audi A4 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 Basics& Essentials - Audi A4 B5 (1997-2001) Jacking Up Your Car. Most common tasks need the car to be jacked up in the air. The most common task to do on your Audi A4 is explained thoroughly in this helpful article. Applies to: Audi A4 (1997-02) - Audi TT (2000-04) - VW Passat (1996-00) - VW Golf (2000-02) - VW Jetta (2000-02) - VW Beetle Themost common problems with a used Audi A4 B5 I 1994 - 2000? AudiA4 B6 Fixing Common Vacuum Leaks . Audi A4 B6 Fixing Common Vacuum Leaks and turbo, same problem. 06 Audi A4 1.8t runs great. Idles at 800. Smooth. Put in drive, runs great til about 2500, then screeches sounds exhaust/turbo related. need help. i have an audi a4 b5 1.8 motor code ADR. Have problem with the Ifyou have a Passat or A4, all the turbos from Borg Warner are basically the same in terms of flow, the later models are built for improved reliability. This is also true regardless of chip tuning, the output "rating" from Borg Warner is not saying that is the max power available from that turbo, only what their specification is based on all MHNoU.