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1
vote
1answer
152 views

Audi A4 (B8) safe to drive with vacuum leak?

Have a 2009 Audi A4 which has been running rough with the check engine light on, especially at idle for two days. The dealer described it as a large vacuum leak, and estimated ~$1000 to replace the ...
4
votes
3answers
314 views

08 Audi A4 B7 2.0T DTC P0503 speed sensor erractic/high

I just finished reinstalling the intake manifold after cleaning the valves and went to start the car. It starts for about 2 seconds before shutting itself down. It throws 6 pending codes. P0503 - ...
5
votes
1answer
394 views

2000 Audi A4 1.6 weak motor power

Just few days before I wanted to take Audi A4 B5 1.6 (year: 2000) to 'preventive' service. I've started the car normally, only the motor sound was very weird. So I tried to make a test drive. I ...
2
votes
1answer
326 views

Audi A4 (B8) Whine

I've got a 1.8 TFSI A4, and it's making a whining noise. It's audible if you rev the engine, and when driving. Very pronounced at lower speeds. If you depress the clutch, it stops. But, if you rev ...
3
votes
1answer
677 views

Audi A4 B5 (1995) climate control/heater/blower problem

The climate control was nuts all the time since I bought the car few years ago. I have the air conditioning liquid filled. The mechanics said, the pipes are all in good shape, but something is wrong, ...
5
votes
1answer
3k views

RPM fluctuation when maintaining speed in high gear

I recently got an oil change on my 2008 Audi A4 Quattro. Now I notice that when I am cruising in 3rd, 4th, or 5th gear (but not 6th), and I am at about 1200 RPM, the tachometer is not stable. The ...
9
votes
5answers
3k views

Should rotors with rust on the rims but not the faces be replaced along with the pads?

I have an Audi A4 with approximately 35k miles. My dealership has recommended that I replace both the brake pads and the rotors and helpfully forwarded a picture to me of the rotors indicating the ...
4
votes
2answers
9k views

Audi A4 2007 2.0T boosts but poor performance, fuel economy

My 80,000 mile 2.0TFSI Turbo Audi has lost a lot of performance but produces no check-engine-light (CEL) or codes. One month ago an independent garage looked at it and did $2200 of work including ...