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| D2 - Transmission Gearboxes, diffs, drive shafts. |
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#1
12th September 2011, 09:01 PM
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Another sad S8 owner because of the gearbox
So the S8 flew through it's MOT after two years off the road, but I have the classic gearbox problem.
I took the car for a drive last night and there was a little slippage, but today after the MOT big slippage, bangs and PRNDS. Turning the car off and on resets the PRNDS, but the slippage and bangs are back. The car, at first, doesn't seem to engage and then I get the bang, and Reverse works just fine and doesn't set off the bangs. My mechanic who seems very competant and is an Audi specialist (and who is now on holiday for 3 weeks, spending all the money I have given him) changed the oil, but didn't leave the transmission to drain, and could only warm the gearbox using idle: I know that's not the full reccomended process. I think my options are: 1. Have the transmission drained overnight and refilled as per audipages by an audi specialistgarage to see if that fixes the problem 2. Assume the gearbox is terminal and get it serviced by a ZF specialist: but how much? 3. As 2. above and get it serviced by the guy who does it free, but where do I find his details? 4. As 2. but get a replacement from A8 parts, take the risk that its secondhand and get the original refurbed if needed at a later date either paid or free. At the moment I'm thinking of 1 then 4: any thoughts? If I drive the car in limp home mode will that cause any problems> 
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#2
12th September 2011, 09:39 PM
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Doing the oil change the correct way won't hurt, worth a try. Many a tranny has been brought back to normal operation, after an oil and filter change.
I'm not waiting for mine to let go, I'm doing an 01E 6-speed manual conversion.
__________________
 2006 Audi A8 D3 Quattro Sport 4.2 TDI - Silver, Family Oil Burner. 2000 Audi A4 Quattro Sport 2.5 TDI - Santorin Blue, S8-Powered DTM Race Car Build In Progress. 2000 Audi A4 Quattro Sport 2.8 30V - Pelican Blue, RS4 Widebody, D3 4.2 01E, High-Spec B5 Build In Progress.
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#3
12th September 2011, 09:54 PM
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I reckoned it wouldn't hurt as well: can I damage the transmission by using it in limp mode?
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#4
12th September 2011, 10:18 PM
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Much depends on what the issues are. If the oil is filthy dirty, and mixed with fine aluminium particles, it won't do the internals much good.
I would not drive it, or keep driving to a minimum, if you have to use her at all.
__________________
2006 Audi A8 D3 Quattro Sport 4.2 TDI - Silver, Family Oil Burner. 2000 Audi A4 Quattro Sport 2.5 TDI - Santorin Blue, S8-Powered DTM Race Car Build In Progress. 2000 Audi A4 Quattro Sport 2.8 30V - Pelican Blue, RS4 Widebody, D3 4.2 01E, High-Spec B5 Build In Progress.
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#5
12th September 2011, 10:19 PM
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I forgot to ask - what's the current mileage on your S8?
__________________
2006 Audi A8 D3 Quattro Sport 4.2 TDI - Silver, Family Oil Burner. 2000 Audi A4 Quattro Sport 2.5 TDI - Santorin Blue, S8-Powered DTM Race Car Build In Progress. 2000 Audi A4 Quattro Sport 2.8 30V - Pelican Blue, RS4 Widebody, D3 4.2 01E, High-Spec B5 Build In Progress.
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#6
13th September 2011, 01:10 PM
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It's done around 120K: I ran the car this morning and was OK for 5 miles then it was back to limp mode.
I just tried it at lunch time and it went into limp mode straight away.
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#7
13th September 2011, 02:16 PM
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Quote:
So I understand you recently have oil changed. If that is the case then usually it is because: 1. wrong oil was used 2. oil level is not correct 3. fresh oil has lifted up gunk that have settled down with old oil and blocked filters or causing sicking valves Response to your options: 1.If correct oil was used then another oil change will not cure problem and as oil is quite expensive I would not go that way, just check the level and confirm with mechanic that correct oil were used. 2. It might not be terminal but if there is gunk that was lifted up blocking filters or valves it will require stripping down and cleaning, which would be quite costly so might as well do a full rebuild unless you are doing it yourself. 3. If you can find that guy it is a good option depending how far he lives or what the postage costs would be there and back. 4. Probably no unless you can get gearbox that was recently rebuild and still come with warranty. That will set you back roughly £300-700 for the box, £100 for the oil, £30 for the filter+gaskets and £200-250 for the job and might fail in near future. If you can get one that was rebuild recently then it could very well be the option. I had a chance to buy one which had done only 2000 miles since supplied by dealer for £450, I was considering to give £400 offer for it but decided to do manual conversion if mine ever fails, and that one is gone now. Do not drive if it is slipping clutches , you will burn them out very soon and the it will definitely require rebuild.
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Currently 8less 2011 Q7 S Line 3.0TDI, 2016 Tesla Model S 90D 8 history: 2006 A8 Sport 4.2TDI quattro SOLD, 1997 S8, reached end of life with gearbox failure
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#8
13th September 2011, 03:16 PM
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120K for an S8 is a good innings to be honest, and add to that I've never seen a box recover from limp mode with anything less than full rebuild....
True, if its very recently been 'serviced' incorrectly, and you can undo those errors immediately without casuing permanent damage, you're in with a chance, but frankly, it doesnt look good.... Either way, dont take it to an Audi specialist for an oil change. Very few of them really know much about autos as they are supposed to be sealed for life in the eyes of Audi. If you think there might be signs of like, take it to a ZF transmission specialist, they will really know what they are talking about. Its the same box (and problems) that come in BMW's, Range rovers etc....
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For parts enquiries and Forum User Administration please contact customer services directly, not me  - enquiry@a8parts.co.uk, www.a8parts.co.uk, or call 01642 783537The Daily Town Car - 2023 Tesla Model Y Performance. Black with Black. Giant ipad screen, huge sunroof, 4 wheel drive, Tow bar, lots of ooomph and made in China, so actually built properly unlike the Californian ones. The Family Wagon - 2018 Tesla Model X. Black, 7 Seats, Towbar, Homelink, Enhanced Auto pilot with Summon and self park, Heated front seats, CCS Charger upgrade, MCU2 Upgrade, Falconwing Doors, Self opening / closing doors, Netflix, Spotify, toys, Air suspension, alcantara roof + lots of other stuff...... The 17 year old Driver Wagon 2015 Skoda Citigo Monte Carlo. Alloys, Power steering, Aircon, Leccy windows, Sat Nav, bluetooth, central locking, cup holders, 59 whole bhp. Million times better than my first car. Well jealous..... The First 20 Audis: 2001 D2 4.2 QS Silver, 1997 D2 S8 Silver, 1999 D2 4.2 Silver, 2002 D2 S8 Dolphin Grey, 2003 C5 RS6 Blue, 1998 D2 S8 Black, 2000 D2 4.2 QS/S8 Ming Blue, 2003 D3 4.2 Ming Blue, 2005 B7 S4 Blue, 2006 D3 3.0 Tdi Black, 1999 D2 4.2 Silver, 2003 D3 4.2 LPG Crystal Blue, 2000 D2 S8 Silver, 2007 3.0 Tdi Q7 Black, 2009 B8 S4 Black, 1998 D2 S8 Agate Grey, 2006 D3 4.2 Tdi Blue, 2006 D3 S8, 2007 Q7 3.0 Tdi, 2006 C6 S6, The Second 20 Audis: 2011 A7 Sline, 2001 A2 1.4 Tdi Black, 2002 A2 1.4 Tdi Silver, 2006 A8 4.2 Tdi Blue, 2007 4.2 Tdi Q7, 2006 S4 Cab Silver, 2010 RS6 Saloon Black  , 2007 TT Roadster, 2010 A8 D4 4.2 Silver, 2006 C6 A6 2.7 Tdi Quattro, 2000 D2 4.2 QS/S8 Ming Blue (again), 2008 Q7 4.2 Black, 2009 C6 RS6 Saloon Daytona Grey, 2001 Fully Loaded A2 Tdi, 2006 Avant S6 Black, 2007 VW Caravelle Exec Black (almost an Audi) 2009 TT Roadster Daytona, 2015 Q7 4.2 tdi lava grey, 2002 GmbH D2 demonstrator, 2006 D3 A8 LWB 4.2 Tdi Black Most Recent Audis: 2001 A2 1.4 Tdi Black, 2007 4.2 FSi Q7 ABT Blue, 2016 S5 Coupe Launch model, 2004 S4 B6 Cabriolet, 2016 Q7 Sline White, 2006 Q7 4.2 FSi Black, 2012 Q7 Sline+ 4.2Tdi White, 2008 Blue Audi S8 Everything Else 1989 Subaru Justy, 1986 Vauxhall Cartlton 2.0 GL, 1985 Vauxhall Carlton 2.2 CDi, 1987 Ford Sierra XR4x4, 1983 Vauxhall Senator, 1985 Vauxhall Senator 3.0i, 1997 Polo Saloon, 1997 Peugeot 306 1.9 TDi, Ford Sierra Sapphire 2000E, 1990 Subaru Justy, 2000 Subaru Impreza, 2000 Subaru Impreza RB5, 1993 Range Rover LSE, 2005 VW Bora, 2003 Skoda Superb, 2003 VW Passat V6 4 Motion, 1996 Peugeot 106, 2000 Range Rover 4.0, 2019 Tesla Model 3 Performance
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#10
13th September 2011, 03:56 PM
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Before my S8, I had an A4 3,0 Avant Quattro, with the ZF5HP19a. It went into limp mode at 138,000. Stuck in third, and the PRNDS in red.
I was prepared to condemn the tranny, but decided to try an oil and filter change, as described in AudiPages. It cured it, I sold the car with 160,000 on the odometer, and it never missed a beat, I also drove through France to Spain, and it didn't let me down. So yes, it's possible an oil and filter change may do the trick. Sure you've had this done, but there are no guarantees it was done properly. Or the oil grade and level are correct. I wish you all the best.
__________________
2006 Audi A8 D3 Quattro Sport 4.2 TDI - Silver, Family Oil Burner. 2000 Audi A4 Quattro Sport 2.5 TDI - Santorin Blue, S8-Powered DTM Race Car Build In Progress. 2000 Audi A4 Quattro Sport 2.8 30V - Pelican Blue, RS4 Widebody, D3 4.2 01E, High-Spec B5 Build In Progress. Last edited by Nollywood; 13th September 2011 at 04:00 PM.
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