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#1
14th February 2011, 07:13 AM
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Prefacelift A8 won't start
Hi have pf a8 4.2 for some reason this morning car wouldn't start....the engine cranks over and goes to start...but then just stops...any ideas would be appreciated....last time it was driven was Friday morning so it's only been standing a couple of days....
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#2
14th February 2011, 04:47 PM
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If it starts for a second then stops it sound like immobilsor issues.
__________________
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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#3
15th February 2011, 08:29 AM
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Quote:
Could be fuel maybe
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#4
15th February 2011, 01:05 PM
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Thanks for your replies guys....
Turns out the fuel pump fuse had blown....however when I put in a new fuse that blew too....at which point I gave up and have passed the car on to a local auto electrician....cos I figured he would diagnose the issue much quicker than me. Ps just at mrc today getting my s4 an oil service....mike ur rs4 looks stunning....
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#5
15th February 2011, 01:21 PM
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Quote:
Let me know what power the S4 makes on the dyno
__________________
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
15th February 2011, 04:05 PM
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I'm guessing the fuel pump has stalled!!! Drawing to much current trying to start and blowing fuzes.
Don't be cponned into a new fuel pump assembly you can change the pump as Amar can attest to.
__________________
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
16th February 2011, 10:40 PM
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problem resolved
Got my a8 back today....just as you had said....the fuel pump had failed....fortunately the chap I gave the car to was really reasonable and changed it for next to nothing far as I am concerned....think he just charged me for a fuel pump.....
Curious though...why would a bad fuel pump draw so much current....I would have thought it would just stop working.....
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#8
8th March 2011, 10:53 AM
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If the pump is stalled, ie some grit or crap stopping it turning then due to electrical mysteries it pulls more and more current to try to get it moving and therefore blows the fuse.
It's there as a safety device and it worked. No fuse then the pump would melt out and your car would go on fire and.....
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