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| D2 - Fuel and Exhausts Everything to do with getting fuel into the engine, and fumes back out again |
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#1
19th February 2010, 10:43 AM
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Won't run
After replacing the broken green powdery lug connecter that goes to the connector block on the underside of the drivers side front corner on the drive last night the 8 fires into life. Albeit a bit slow cranking.
Started up this morning fine, drove up the road to give it a run managed about ½ mile and started to get lumpy, missing a couple of cylinders or some thing. Then CAT light comes on and no power missing like mad now, dropped a couple of gears so I’m thinking limp home mode but came to a halt at side of road a stalled. On restart engine misses, CAT light stays on the charge light comes on and then stalls. Then won’t start because battery is flat as when I turn the key all light dim on dash. Called a friend who came out so we put the jump leads on, it starts CAT light stays on still missing, charge light flickers and then engine stalls. So I suppose my questions are, As the connector broke sometime on a journey can I have fried the alternator with out this connection making a circuit, there fore running on the battery now that’s dead too. I didn’t have the charge light come on until the engine just about stalled. Can I be that unlucky that while the car has been sat doing nothing the CAT has collapsed and this is causing it not to run. Or I suppose I could still have a bad earth some where. 
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#2
19th February 2010, 11:33 AM
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ok, heres my thoughts.
Dont worry about the Cat. The cat light only comes on to warn you that unburnt fuel is entering the exhaust system, which could damage the cat. A broken cat is unlikely to cause you a great deal of problems until your MOT, other than running a little bit lumpy maybe. It sounds like you have cylinders off, which can happen for a number of reasons. A common one is for the coil packs to fail. These small amplifiers are needed to boost the signal for the spark plugs to fire. If one goes off, the engine ECU usually gets confused and starts shutting down other cylinders, ending up in a right wibbly wobbly misfiring mess. The alternative is a fuel starvation problem, either through lack of fuel or fuel pump problem, but the fact that it restarted suggests to me this isnt the case. Vagcom would tell you a heck of a lot right now as it would tell you which cylinders are off, and if this is consistent then the coil pack concept holds. Also, there are two coilpacks, and swopping them over should move the problem, further clarifing the cause.... I'm sure right now that it seems the car is a heap of junk and you hate it, but really I'm sure it is something very very simple.... 
__________________
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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#3
19th February 2010, 11:35 AM
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Quote:
Bad earth may explain the flat battery, or a poor battery itself - Cold weather is an absolute killer and a 'good' battery can be flat overnight when it gets chilly...
__________________
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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#4
19th February 2010, 11:53 AM
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Thanks Ian. At least i have somewhere to start now. I'm still loving the car she's not done bad really, woudn't be quite so bad if it wasn't 1/2 a mile up the road and still on the drive. Don't fancy dragging her home by the ball hitch
I don't have Vag Com but can see why i should now. Conan you still having your Carrier fixed in Scotland? Does anyone lend or hire Vag Com to Dezzy? Last edited by Dezzy; 19th February 2010 at 11:55 AM.
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#5
19th February 2010, 01:10 PM
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You would be welcome to come over and use mine but seems your quite far away, I think we have a Vag Com register here so you could find someone local with one.
__________________
2009 Audi RS 6 Saloon V10 - 420mm Ceramics, Keyless, Soft Close, Adaptive Cruise, Glass Sunroof, Blinds, Twin Pane & UV, Freeview & DAB, High Beam Assist, MTM bits, Audi Exclusive Bits, MRC, Milltek, GYEF1 ASY2's, Bluetooth streaming music to AMI mod - 753 PS/1021 NM 2016 Audi S3 Saloon, Sepang, S-Tronic - B&O, Tech Pack etc... Company Car 1995 Audi A8 4.2 V8 quattro Sport - Bose, Solar, Blinds
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#6
19th February 2010, 01:42 PM
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Dezzy,
I'm home for the weekend. Could come over tomorrow sometime if you want.
__________________
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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#7
20th February 2010, 08:24 AM
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IT'S ALIVE!
I don't know what to say, lastnight in the dark went back to the 8 with a second battery from my Land Rover swapped them over so i could leave the park light on because i was worried the car was going to be wiped out. Now matey from over the road gave me a lift back to the car as he was interested to have a look (he's a mechanic) Everything was the same although with the new battery on it was winging over a bit quicker but wouldn't start, Andy (Matey) went into the fuse box then under the bonnet and said try that, car fired up although a bit lumpy then levelled out smooth CAT light stopped flashing and everthing is fine. Matey said he doesn't really know why it would do it only thing was a couple of fuses clicked as he went through them but all were in and none were blown. He's now a bottle of red better off. Singh, thank you for the offer but like you say a bit too far (this time) Conan, I'll get the kettle on.
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#8
22nd February 2010, 01:47 PM
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Like nothing ever happened
After Conan plugging the old girl in yesterday and clearing one or two faults
 and none coming back after the test drive Went on a 200 mile trip and nothing, not a cough or splutter. So back to norm i hope, fingers crossed anyway. I did find wet carpet in passenger floor so drain unblocking for me at the week end. The inside of ECU box was bone dry and it has it's seal so don't think it was down to that. (missing) Hope your journey went well Conan after your S cought the missing bug from the drive? And a big, big thank you for plugging me in. I need one of them
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