Audi A6 Quattro Questions

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Any connection in these symptoms?

does synthetic motor oil break down? how often are oil changes required if using full synthetic oil in my audi a6 quartto?

For parts and labor

the Car starts briefly,then shuts off. Will there be a check engine light or something similar?

Local dealer and private repair companies use online All Data website to quote hours. We are aware mechanics are much faster than these times quoted by dealership and private repair companies.

It has no leaks

Sounds like its trying to turn on but just wont

Will a Multiple Purpose Switch work?

I tried to time this vehicle but, when i install especial tool on side of block the timing marks on crankshaft pulley does not line up with timing mark on block. Also #1 piston is not all away to the top and camshaft tensioner passenger side is up all away, but driver camshaft tensioner is almost all away down.
Car start but it shows no compression on two cylinders on the driver side bank.
It does not seems the valves are bent because the caps are not loose. I got Mitchel1 step by step procedure but nothing matches to the direction it shows. Please help. Nicholas Wood.

I drove about 15 miles to my sister's house, parked and when I was leaving, the engine turned over just fine, but it wouldn't start. It seemed like it wasn't getting gas or like when the older cars would get moisture in the distributor cap, there wouldn't be a spark. The next day when I went back to my sister's home to meet the towing service, it started right up. I took it directly to a German garage and they couldn't find a thing wrong. So the next time I drove it, I stopped to put flowers on my wife's parents grave site & when I tried to leave, it did the same thing as the first time. Turned over fine, but wouldn't start. We waited for about 5 minutes and it started again, but it struggled a little getting going. We drove 50 miles with no trouble, but this morning it won't start again. Can anybody help? The car shop ran extensive tests on it saying they couldn't find a thing wrong.

car only drives in First (Low). Reverse is good too. is it safe to continue driving like this? i work 40 minutes from home 6 days a week. So im on the road quite a bit. Its a 97 Audi A6 Quattro Avant model.

Locked in park then ac quit.

MIL light staying On and car runs Very rough

Furthermore, the vehicle shakes and struggles to accelerate for 5-10 min then drives mostly fine for the remainder of the day. This happens at the beginning of each day. The Audi also shows signs of needing a new timing belt and water pump as it shakes while idle and overheats a bit. Help!

Also is wearing my tyres out prematurely. I think maybe the stearing rac may need rebuilt. I need confirmation from someone who has had experience with Audi's in the past and who may have an idea on cost.

I replaced the flasher switch and it still makes a buzzing noise. And i still have no blinkers.

Recently changed hose between power steering pump and engine block. Loud groaning and super stiff steering. Dont believe it is the pump, and have tried flushing reservoir and turned wheels lock to lock many times. after that, noise stops until i drive.

where is cam position sensor b located

location to replace

For a 2006 Audi A6 Quatro with less than 50,000 miles; what would the expected service life be for the front upper control arm bushings in the suspension system