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#1
4th May 2009, 02:06 PM
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gearbox leak
Hi Mrs A8 Owner here
Just been told by my gearbox has a leak, Stev thought there might be due to the hot smell we get after a trip out, hence why i had it checked out. Weird thing is we have had this smell since we have owned the car, yet the transmission people who did oil and filter change on it didnt say a thing to me.   It seems at the back of the gearbox, high up theres a leak, poss seal gone. Anyone on here can confirm theres a seal there, or is there somthink else to look for?. Is it big job to do?, I.E lots more money? Will be ringing transmission people tomorrow to ask why they didnt tell me about this, as it will mean ile havto payout again for oil. any help greatfull.  Thanks  51 plate FL 3.7 sport 5 speedNow fully detailed
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#2
4th May 2009, 02:25 PM
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The final drive seal is a common fault - It drops oil onto the (left I think from memory) cat and when the car is warm, the oil burns off creating the smell.
In fairness to the transmission place, they would have worked on the car coldish I would imagine when they changed the transmission oil, and when cold, the leak from the final drive seal is hard to see. Its not a common ZF problem, its just that Audi put the cats right under the back of the box, so the rubber seals get heated up and chilled, heated up etc and they eventually dont seal as well. Good news is that is should be only circa £100 to do, and it wont need your gearbox oil refilling as the final drive seal seals off the rear diff, not the gear change mechanisms, and this area of the box uses different oil, and only about 1.5 liters of it....
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#3
5th May 2009, 03:05 PM
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hi just had mine done today. bought parts from audi and got a local garage to do it for 70 quid. also printed the following pages and took it with the parts to the garage.
http://www.audipages.com/Tech_Articl...placement.html
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#4
12th May 2009, 09:11 AM
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so the rear output seal need the same oil as the rear axle diff?
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#5
12th May 2009, 04:24 PM
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Straight from the good book....
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light.
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#6
12th May 2009, 06:06 PM
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Not sure what mine is, but after I have driven her hard I see smoke coming from under the drivers side door! Anyone else had this?
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#7
12th May 2009, 09:26 PM
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cheers for clearing that up mike
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#8
13th May 2009, 05:51 AM
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Quote:
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light.
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#9
13th May 2009, 04:07 PM
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I have the smoke as well if spanked, according to my pet mechanic it is NOT the gearbox but somewhere from the rear of the block.
I'm not worried, I just keep checking levels which reminds me, oops. Bill
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"Man Math" - The means by which a caring husband convinces his wife that a 4.2 A8 is in fact cheaper to run than a tiny Auto crap box "Being in touch with your feminine side" - The ability to, in the 30 seconds following a major accident, obtain your wifes approval for replacing your big german car with another "because otherwise we'd be dead". See also sulking for two years until she finally allows you to get another purely on the basis of your current one being the wrong colour.
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#10
13th May 2009, 05:02 PM
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Somewhere at the rear of the block will more likely be camshaft cover seals. Well documented procedure on Audipages in the sticky.
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Conan (the Librarian) Watch it if you dare Currently, 2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block. 1997 4.2 A8SQ - the Projekt. 12 years and ongoing! 1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard 2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion. 2005 C5 Allroad 2.5TDi FE - Grey - Workhorse. 2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter. Previously 2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex 1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure. 1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex. 2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on. 1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8. And a list of non VAG going back 40 years before I saw the light.
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