2001 Audi A6 Quattro Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2001 Audi A6 Quattro
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2001 Audi A6 Quattro ProblemsNo Start after Refueling and Popping Noise from Trunk
Popping sounds from the rear of the vehicle may be heard moments after starting the engine, or when slowing to a stop. This noise is from the leak detection pump filling the fuel tank with air, and releasing to retest the system when it finds a fault. The sequence of faults identifying this issue are as follows:
- Succession of loud pops from rear of vehicle
- Pops go away, and fuel economy decreases
- Check engine light illuminates
- OBD trouble code P2404 and/or P0441 is stored
- Engine will not start after refueling (must crank for over 30 seconds)
- Vibration when slowing to a stop
The cause is a valve which is mounted on the front of the intake manifold, commonly called the N80 valve, or EVAP system purge valve. The valve is designed to open under specific circumstances, but a worn valve will remain open at all times, preventing the pressurization of the fuel tank.
Correction of the issue is to replace the N80 valve with the latest revision.
The anti-lock brake system (ABS) control module may fail causing the ABS light to illuminate. Failed modules should be replaced to restore ABS operation.
2001 Audi A6 Quattro QuestionsEverytime im driving and press the brakes my car stop (2 answers)
When Im driving and a ease on the brakes my car skirts and stop and locks up and when i try pressing the gas its as if my wheel locked up and won't move my car still stays on but I could literally be flooring it and it moves bearly then i have to go in to netrual and back to drive just to get...
I already replaced the catalytic converters,, but the problem continues.
It will catch after a few seconds but when it is in first gear it will hardly move once it shifts into 2nd or after going above 20 mph it moves fine. It is an automatic or what I have heard people call it an auto manual.