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No Start 97 4.2., USA
Greetings from the USA.ABZ. Replaced Fuel Pump, crank position sensor, fuel pump relay. Have lots of fuel at return line. Spark. Handheld vagcom 401 shows no fault codes. Fresh battery. New coil packs. New spark plugs. Swapped known working ECU/M. Still no start.*
If car sits for hours, it will start for a second. Background: Purchased car a couple months ago. Mileage 160k. Hasn't been on the road since 12. Old gas, but started. Ran rough. Added fresh gas, ran vagcom, 3 bad coil packs. Once packs replaced/codes cleared, the car ran really well. Took for a 10 minute drive, and the car died. Has not started since. Discovered bare wires at the cps, Replaced crank /G28/RPM sensor. Drained tank (still had bad gas). So replaced pump and filter. What should I check next? At a loss. Thank you. Michael
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Michael 1997 A8 4.2 Quattro, Black on Black 1995 BMW M3 1986 Mercedes 190d (daily driver) 1980 Porsche 928 Santa Monica, CA USA Last edited by MJD2; 16th April 2017 at 09:37 PM. |
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Audi S8 2002, Black (even the chrome bits) Audi RS6 Avant 2008, Daytona Grey Maserati Granturismo 2008, Metallic Nero Carbonio Audi S8 2015, Daytona Grey |
#3
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Thanks. I think that only applies to 99 and up cars.
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Michael 1997 A8 4.2 Quattro, Black on Black 1995 BMW M3 1986 Mercedes 190d (daily driver) 1980 Porsche 928 Santa Monica, CA USA |
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How much new gas did you put in after you drained it? Correctly seating the pump in the tank is very tricky with these - it can feel like its right, but runs out of fuel at 20 litres (5 US gallons) remaining. The symptoms sound very similar to what you're seeing. Try adding at least 6 gallons more to the tank and see how it behaves
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#5
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Quite the opposite immobiliser issue is mostly for cars before 1999, from 99 immobiliser is in instrument cluster and wiring is different with no separate immobiliser wire.
But I still don't think it's the problem as it would show fault code in ECU, something like 'Engine start blocked by immobiliser. I would suggest to try more petrol as well if you do not have at least third of tank already.
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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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Quote:
Quote:
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Michael 1997 A8 4.2 Quattro, Black on Black 1995 BMW M3 1986 Mercedes 190d (daily driver) 1980 Porsche 928 Santa Monica, CA USA |
#7
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But UK gallons are much larger than USA gallons
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2002 D2 S8 – Ming Blue, Valcona leather, Vavona wood insert, solar sunroof (to be fitted), Heated rear seats, extended leather pack, 18” Avus, ski hatch, Bose, auto dim rear view mirror, rear blind. |
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Might be worth checking the engine earth lead.
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I don't suppose that start could be being inhibited by a faulty or intermittent F125 switch on the side of the gearbox (cable from gear lever operates it but mine recently failed because one of the metal prongs had broken off inside the switch and it wouldn't start at all).
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Confidence is the feeling you have before you know better . . . . Audi A8 D2 3.7 Quattro Sport 1999 FL - Melange 2nd Place Winner - A8-Freunde Annual German Meet 2012 at Edersee 20" x 9" Bentley GTC Wheels with 385mm W12 Front Discs & Bentley Caliper Covers, Front Lowered on Coilovers, Xenons, Combined DRLs and LED Foglights to modified OEM front fog lamp position, Alcantara/Leather, Full Black Alcantara headlining + pillars and blind shelf, Bespoke Flat Bottomed Sports Steering Wheel, Dark Myrtle Wood, Autodim Mirrors, Bose, Blinds, Digital TV, Ski Hatch, Modified rear exhaust section for extra V8 Burble Audi S8 D2 Final Edition 2002, Avus Silver with Red Leather Interior Tiptronic with Sport mode button, Sony rear entertainment package, Bose sound system, Audi Navigation Plus, 20 inch Final Edition alloys, Full Cat Back Stainless Milltek exhaust, giving a great V8 burble Audi A8L D2 4.2 Petrol with LPG - Ebony Black Audi A8L D4 FL 4.0T Petrol twin turbo - Havana Black Audi A2 1.6 FSi Sport - Dolphin Grey with Votex body kit and Red Leather Interior and some other A8's A8L's and Mercs |
#10
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If the gearbox is not in neutral or park (or if the car thinks it's not in neutral or park) the starter will not operate and turn over engine.
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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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