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Audi A4 Questions

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Recently experiencing a lagging in turbo and hearing a rattling underneath the car. Took it to Audi dealership to run diagnostic ($150.00). Result came back as wastegate malfunction and said needs replaced. Dealership estimate is $981.00 plus tax including labor. Is this a reasonable cost for this repair? Thank you!
started happening in the morning. now i cant go 10 miles without overheating and needing coolant
The transmission was part of a class action lawsuit, but I had 110k miles on it and they stopped paying for fixing the trans at 100k miles.

The trans has been slipping for 3 years, I have always driven it carefully and it's hung in there all this time. Even drove from Arkansas to S. California.

I have smelled trans fluid when I park, the trans fluid has never been touched...? Could it need more oil?

Car has 139k miles, going to be giving it to my 16 year old daughter to drive...but I need to get this fixed.

Help. :-)

Mr. Fine
Upland, California.
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I recently was run off the road by a terrible driver in my lane, and ended up knocking off my passenger side mirror. I took the car to a local shop that I have used in the past and has done good work before. However, the shop had my car for two weeks to replace the mirror and when I came to get it the mirror was obviously the entirely wrong mirror. The shop owner admitted it was wrong and said he would fix it immediately. He kept the car for another week at which point I told him I really needed it and he said I could come and get it while he worked out a fix for the wrong mirror. When I picked up the car it was in pieces. It was drivable, but the interior door panel is in the back seat and there are pieces of the door and tools all over the front seat. Needing the car immediately I had no choice but to take it as is. It has now been another week that I have been driving it in this state. The shop owner still says he is working on getting the right mirror and getting it painted, but he keeps pushing back the install. If I end up having to tell him to just put the door panel back on and going to a different shop to get the right mirror should I have to pay for the service he didn't really provide?
I had the trans and comfort control box replaced. All is good. When the car is off there is a ticking noise on the pass side rear. Rear seat left hand side. I checked the gas cap and that is ok. What the hell is in there. Maybe a relay? Would a diag test tell me anything?
Intermittent problem generally first thing in the morning. Engine is running rough and car shakes all over. Engine appears to be flooded. Black smoke and strong smell of unburnt fuel out of exhaust emmission. Switch engine off and restart seems t clear the problem. Could it be faulty ejectors/ignition coil or faulty Catalytical converter
My car was stolen 9 days ago, it was found 300 miles from home and is disabled according to the impound lot, they have said that it's able to go into gear But does not seem to be "catching" the gear after it is put in not enabling the car to be moved. What could be causing this problem?
I had this problem once or twice after buying the car and putting it in first gear, but after shutting it down and restarting it was able to be put into gear and ran normally.
We had it hooked up to a sensor at a local garage which gave us some codes but those all indicated a problem with the O2 sensor and as far as before the theft of my vehicle there was not any major problems with shifting, starting, or moving the car. I'm afraid that the man whole stole it did serious damage, any opinions?
The air conditioner will run for a few seconds, then turn off and the blower turns off to and come back on a couple minutes later and does it again!
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