#1
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A8 Timing out?
Ok so forgive me If this turns into a waffle but I guess you need the story.
Bought a 2000 A8 D2 2.8 recently. (picture in introductions) after about a week it started making a noise that I attributed to a tensioner on the aux belt. Turns out I got it to the garage just in time as the water pump had died and dropped water all over the tensioner below it causing catastrophic failure (loss of all ball bearings) and very nearly toasting the car. I took it to my very competent tame mechanic who fitted a new cambelt kit tentioners water pump and rollers in just under 2 hours. He told me with the bearing going he had no correct reference point so had to guess the belt position (possible misquote here) I've since read about the special tools and about having to take the front end off to do the job. I've also read a lot of posts on here that tells me this isn't uncommon. Everything works fine and runs but I now have a lumpiness at tickover that wasn't there before. We both suspect the timing may be slightly out and the VCDS log kinda confirms it. What I need to know is 1. if I buy the special tools will that allow him to set it up properly if he has no correct reference point. 2. where do I get the tools and a ball park price if possible The car does have one or two other issues but I'm kicking off here with the priority cases. Thanks in Advance Mike VCDS LOG (Excuse me if its incorrect its the first time I've used it) Monday,09,February,2015,11:08:17:62939 VCDS -- Windows Based VAG/VAS Emulator VCDS Version: Release 12.12.0 (x64) Data version: 20130910 VIN: WAUZZZ4DZYN008033 License Plate: X307WRC Mileage: 132212 Repair Order: -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- Address 01: Engine Labels: None Control Module Part Number: 3B0 907 551 AB Component and/or Version: 2.8L V6/5V G 0001 Software Coding: 04553 Work Shop Code: WSC 00202 Additional Info: WAUZZZ4DZYN008033 AUZ7Z0X1202885 VCID: 63C54907F1A06306E91-5000 3 Faults Found: 17978 - Engine Start Blocked by Immobilizer P1570 - 35-10 - - Intermittent 18058 - Powertrain Data Bus P1650 - 35-10 - Missing Message from Instrument Cluster - Intermittent 17746 - Camshaft Position Sensor (G40) P1338 - 35-00 - Open or Short to Plus Readiness: 0000 0000
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2000 A8 D2 2.8 none Quattro 1990 Lada Niva Cossack Jacked 2008 Transit 140 www.tyresbarrow.co.uk |
#2
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I'd start with the camshaft position sensor... That would cause timing issues. Can't remember if it can be done with the belts in situ or not, but other members have has issues.
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2010 Jag XF 3.0D Portfolio S I know.. I know.. |
#3
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Camshaft position sensors do fail now and again, sometimes without ill effects apart from fault code, other times affect engine running. You probably want to change that first, new are quite expensive(over £200) but they are known fail so it is a risk when buying second hand. There is 2 of them, 1 on each bank, G40 will be on back of bank 2 left side of the engine, cylinders 4-6. But fault code 17746 should be for sensor G163 which is on bank 1, so this is a bit confusing
Timing tools for 30V V6 can be bought on e-bay at reasonable price not like expensive ones for 32V V8's. There is 2 tools needed, examples on the e-bay links below. http://www.ebay.co.uk/itm/VW-AUDI-V6...item418212bf0e http://www.ebay.co.uk/itm/Locking-Cr...item3f3298624c Also check measuring blocks for learned lambda values, should be within -10..+10% and no more than 4% difference between banks. If the difference is more than 4% it definitely needs timing done but even if it is less still might need doing. These V6 seem to be sensitive to overheating so it might have suffered some damage if coolant had leaked out and overheated.
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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 |
#4
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Its never over heated as far as i'm aware in fact it runs very cold most of the time.
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2000 A8 D2 2.8 none Quattro 1990 Lada Niva Cossack Jacked 2008 Transit 140 www.tyresbarrow.co.uk |
#5
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I have the same engine in my A4 and it's bang on 90c when warm.
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Matt 2004 A8 3.7q, 1998 A4 2.8q, 1994 Coupe 2.8q SORN, |
#6
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I'm way below 90
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2000 A8 D2 2.8 none Quattro 1990 Lada Niva Cossack Jacked 2008 Transit 140 www.tyresbarrow.co.uk |
#7
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Quote:
I'd rather avoid swapping out 2x £200 + parts if its just the cam belt being a tooth out as I asked. Everything was fine before the change everything is fine now apart from the lumpiness. Is there a way I can prove or disprove these things needing changing before I go out and spend 400 plus on new parts Just to find its a tooth out and could have been sorted for the cost of the labour. Please don't think I'm second guessing your help I really do appreciate it I just wanna be sure, this care is gonna cost enough to sort as it is without just throwing part after part at it in the hope that might be the issue. Quote:
Thanks i'll run a full check tomo and report back. I've ordered both tools so will just have to wait till they turn up and book it back in
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2000 A8 D2 2.8 none Quattro 1990 Lada Niva Cossack Jacked 2008 Transit 140 www.tyresbarrow.co.uk Last edited by Urbtree; 10th February 2015 at 06:03 PM. |
#8
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Quote:
Not sure what and where that is on a 2.8 but I'd guess it's not that different to a 4.2. The 4.2 sensor is relatively easy to replace, but a bit of a swine to get at and put back without the risk of losing the retaining clip. I've done it at least 3 times (don't ask!). Again, if it's the same sensor as a 4.2 it's a pretty common VAG part (green 4-pin type) and I think it actually has 2 sensors in it, one used by the engine management and the other by the instruments. Don't buy a cheap clone if you do replace it - tenth of the price but a tenth of the quality.
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2003 D2 FL S8. Irish Green Pearl/Beige. Solar sunroof, auto-dim mirrors, electric rear seat functions and extended leather. Ski hatch retrofit. Aftermarket reversing camera. DVB-T and XCarlink now removed as redundant. 2016 Volvo V40 T5 Cross Country (4WD) with ALL the toys including adaptive cruise etc. etc. Osmium Grey with Blonde/Charcoal leather interior. Polestar performance "optimisation". (A much rarer model than a D2 S8 by the way!) Oh, and a brand new engine at just under 30,000 miles on the factory one! Finally: gone, but not forgotten..... 1998 D2 PF S8. Agate Grey/Platinum. Every option (I think) except electric rear seats, Tiptronic steering wheel, ski hatch, towbar & dimming door mirrors. e.g. Cruise control, NavPlus/TV, Bose, GSM, Xenons, Solar roof, Parking sensors, Alcantara/leather everywhere of course. (internal dimming mirror added later) 1998 (very early) Ford Focus 1.8 Zetec; ABS/TCS, Heated screen/mirrors, Aircon. Added Auto-dim mirror, Leather seats, Trip computer, Cruise control, OEM Ford SatNav with CD changer. And before that a lot of Rover 800s, a few oddities, a lovely Triumph Dolomite 1850HL with Overdrive and way back in my schooldays an Austin Seven aka Mini 850! |
#9
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Guess belt position ? Nonsense. You lock the crank with crank locking pin, pop sprockets off both banks and use the bar to line them up with belt in place. Not hard at all but you need the bar and the pin to stop it pulling timing when you tension.
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#10
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ok so with the correct tools it should be possible to sort, thanks.
I've ordered them up so should be able to sort it and if the crank position sensor pops up again after its done i'll swap that out as well. Thank you all
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2000 A8 D2 2.8 none Quattro 1990 Lada Niva Cossack Jacked 2008 Transit 140 www.tyresbarrow.co.uk |
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