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Audi A6 Maintenance and Repair

1201 messages,  Last post on Nov 28, 2009 at 6:07 AM

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What is this discussion about? Audi A6, Sedan, Wagon

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#991 of 1201 95 A6 Quattro, head gasket by jcanton1 Jul 18, 2008 (11:08 am)
My A6 Quattro (150k mileage) evidently overheated without any warning and coolant has invaded the pistons. The repair shop quote for just a head gasket replacement is almost as much as the value of the car and we wouldn't know if there is any other damage until the heads were off.   I am thinking about doing the job myself, or at least opening it up to to see the extent of the damage. I once did a ring and valve job on an old GM engine but have never tried anything on a modern engine such as this.   My intention would be to do a repair in a reasonable time frame. Am I overreaching here considering special tools, manuals or Audi engine expertise?   By the way, it would be interesting to know if anyone has a comment about the problem: the engine had plenty of coolant (very well maintained), was cruising at 65 and it simply bogged down, I pulled over and it began to steam from the engine compartment. The temperature gauge did not rise until I was on the side of the road. The shop says you can have a leak, lose coolant and burn the engine faster than it can register a high temp. That sounds pretty scary for such a "technically advanced" car. Replies to this message: Mr_Shiftright (Jul 23, 2008 5:07 pm)
#992 of 1201 Re: Audi A6 Timing belt [kirby2010] by colonote Jul 23, 2008 (11:25 am)
Replying to: kirby2010 (Oct 17, 2007 1:49 pm) We had a '99 A6. At about 51,000 miles my wife was driving into an intersection when the timing belt broke. Stopped the car dead in it's tracks. (she could have been killed). Pieces of the belt flew into the engine causing $2000 worth of damage. With the dealers help Audi covered the expense although technically it was out of warranty. I wouldn't take any chances. Haven't given up on Audi - we now own an '08 A6.
#993 of 1201 Re: 95 A6 Quattro, head gasket [jcanton1] by Mr_Shiftright HOST Jul 23, 2008 (5:07 pm)
Replying to: jcanton1 (Jul 18, 2008 11:08 am) Well if you burn up the coolant in the combustion chamber, the temperature sensors have nothing to measure except steam. This would be the case with any car. The sensor needs to immerse itself in coolant to read correctly. So sudden coolant loss would probably be undetectable in any car.   As for doing the work yourself, I think if you prepared yourself by buying a FACTORY repair shop manual and acquiring the tools you'll need beforehand, you might take a crack at it. As you say, basically your car is now "totalled" anyway, so what have you got to lose?   However, you will have to take the cylinder heads to a machine shop and have them checked for warpage---this is essentially. And you MUST replace or boil out the radiator---also mandatory. If the heads need reconditioning, that could start to get expensive.   I'd say your probability of success is dependent on the level of your preparation prior to loosening the first bolt.
#994 of 1201 05 CPO A6 by ipod_nano Jul 23, 2008 (8:53 pm)
Hi all,   Finally made the plunge and purchased a CPO 05 A6 w/ 45k miles on it. While I have to admit that I am an avid BMW fan, I thought it would be nice to explore the other side and so far like it a lot.   That said, I have a few questions:   1- 05's include audicare, is there anything I should expect after 45k that is covered(unfortunately I did not receive a service manual, just owners + MMI) 2- It seems as if every 5-7 or so cold-starts it seems VERY rough but then smooth's itself out after 30 seconds or so. Anyone experience this type of start? 3-Checked the oil and it seemed a bit dark. Dealer said it's policy to change oil for every CPO(during inspection/cert) but does audi oil have a different color(sounds like a stupid ques.) 4-Anyone change their own oil on a C6 A6? Any tips? how to remove the skid/plate cover & where to access oil filter.   Thanx in advance. Replies to this message: erickpl (Sep 23, 2008 12:41 pm) ipod_nano (Nov 07, 2008 7:50 pm)
#995 of 1201 Audi A6 Volt meter question by bremerdc Aug 01, 2008 (12:18 pm)
I have a 99 A6 Quattro sedan. Lately, when the car is idling, I notice the volt meter kind of 'going crazy' when I have a couple of devices running at the same time (A/C, stereo, headlights, etc). It bounces between 12 and 15 volts. When the car is driving along, it seems to be fine. Any idea where to start? Battery? Alternator? Voltage regulator?   Thanks in advance. Replies to this message: giovannimd (Aug 03, 2008 11:54 am)
#996 of 1201 2000 Audi A6 Tiptronic troubles by labelbob Aug 03, 2008 (7:45 am)
I have a 2000 A6 Automatic that is stuck in 3rd. All the transmission gears light up in black on red rather than red on black on nthe dash so the colors are reversed.   Help!!! Replies to this message: giovannimd (Aug 03, 2008 12:02 pm)
#997 of 1201 Re: Audi A6 Volt meter question [bremerdc] by giovannimd Aug 03, 2008 (11:54 am)
Replying to: bremerdc (Aug 01, 2008 12:18 pm) My 96 A6 Quatro was doing the same and it was because the batery was to small, put a new with the right zise and problem fixed, this happened specially when I used the A/C.
#998 of 1201 Re: 2000 Audi A6 Tiptronic troubles [labelbob] by giovannimd Aug 03, 2008 (12:02 pm)
Replying to: labelbob (Aug 03, 2008 7:45 am) MY 95 A6 QUATTRO, did some thing like it when I changed some fuses and they could not figured out at the transmission place, then I disconnected the (-) terminal of the battery for a couple of minutes and when I connected it back on again it reset ed some thing and the car started shifting normally again, I tried this about 3 times and it worked the same all 3 times, I have not had any problem again!!!
#999 of 1201 98 Audi A6 Quattro maintenance/transmission by mairlou Aug 08, 2008 (9:40 pm)
I am new to this website and awhile ago I put a post on about questions/problems I now have with my audi;I think I listed it wrong since not showing up. When I put the car in drive and go it feels as if my emergency brake is on or something in the back wheels won't let me go forward without jerking. Someone told me that I may need to change or add transmission fluid which may be correct since we cannot locate the place to put the fluid (lack of dipstick).Does anyone have any ideas on this problem I am having? Also, where can I get a maintenance book for my vehicle.I hope someone can help me out since I would like to know is it work putting money into or not. Replies to this message: audiluvblues (Aug 10, 2008 6:39 am)
#1000 of 1201 Re: 98 Audi A6 Quattro maintenance/transmission [mairlou] by audiluvblues Aug 10, 2008 (6:39 am)
Replying to: mairlou (Aug 08, 2008 9:40 pm) I have a 1999 Audi A6 and I was told by my Audi mechanic that the transmission fluid/filter can only be changed by removing the transmission casing and adding fluid. You should be able to find a maintenance book at a site called partstrain.com or on ebay.

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