2004 Audi A4 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Audi A4 Quattro

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2004 Audi A4 Quattro Problems

Check Engine Light Due to Vacuum Leaks, Oxygen Sensor, or Catalytic Converter Fault

Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.

Check Engine Light Due to Faulty Torque Converter

A problem with the torque converter can cause the Check Engine Light to illuminate.

Inspection of Water Pump and Timing Belt

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.

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2004 Audi A4 Quattro Questions

What makes my front wheels squeak while driving? (1 answer)

Wheels vibrate when driving at a high rate of speed. But the steering wheel doesn't vibrate.

Does the condenser need to be replaced when replacing the air compressor? Replaced the compressor.It's blowing cool air and not cold air. Mechanic couldn't find anything else wrong. (1 answer)

why doesn't turbo not work? (2 answers)

I have a 2006 Audi A4 2.0 t and for some reason the turbo does not work. It also has a sudden lag while driving and does not go past 80 mph. Any ideas what's wrong with it?

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2004 Audi A4 Quattro Reviews

I have been in love with Audi's for a long, but unfortunately maintenance related issues have been burdensome.
I bought the car new I had to bring it back to replace the radiator. Twice I had to have it towed back to the dealer because it would not start. The check engine light went on about three times. I had to bring it back to the dealer to find out why. It was bogging down from the stop on acceleration. All of those problems happened when it was still under warranty. After that I had to replace the ...
I love the Car (A4 Avant 3.0). Just bought it so time will tell. So far it's exactly what I was hoping for in an Audi. Unfortunately I have to get the timing belt service done soon. Very pricey on the 6 cylinder.

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