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D3 - Common Faults Quick links to all known common faults and their solutions

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  #31  
Old 10th January 2017, 10:27 PM
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Thats great thanks, worth giving it a try
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  #32  
Old 11th January 2017, 09:46 AM
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At £18.00 certainly a cheaper test than an alternator, starter motor, comfort ecu, ignition switch, battery, coding and labour!!!
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  #33  
Old 11th January 2017, 12:05 PM
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Just to add - here's a couple of pictures, at the base of the large terminals of 370 it shows there's been some heat.
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  #34  
Old 11th January 2017, 12:15 PM
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Great result mate
Is your problem fully solved now ??
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  #35  
Old 11th January 2017, 12:54 PM
woodpoleman woodpoleman is offline
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Can't say for sure yet only had the car back a couple of days. First short journey stopped and started three times no problem. Biggest change is that, once glow plug light has gone out, there is no lag between turning the key and starter motor cranking. Hopefully it's a fix, if not I'll post again before I top myself
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Bought at 9 months old - Ming Blue 2001 (51) 2.8 Quattro Sport with Sat Nav. 122,000 miles
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  #36  
Old 11th January 2017, 01:58 PM
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Quote:
Originally Posted by 47p2 View Post
Thanks for the update, mine has the occasional problem of what sounds like a lazy starter motor or bad earth when the engine is up to temperature. It doesn't happen every time but if I don't do something about it I'll be left stranded in the future.

Do you know the part numbers for J329 (370), J53 & J695 (381)?
This could also be crankshaft position sensor which happened on mine, always started fine from cold but didnt fire up at all when warm/hot sometimes.
Gradually got worse until replaced after it failed completely one day
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  #37  
Old 11th January 2017, 02:50 PM
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Normal pattern for a faulty crankshaft sensor would be that the engine would turn over as usual but fail to start.
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  #38  
Old 11th January 2017, 02:52 PM
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Quote:
Originally Posted by 47p2 View Post
Normal pattern for a faulty crankshaft sensor would be that the engine would turn over as usual but fail to start.
sorry you're right, but does yours do that as mine is already fixed lol ?
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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
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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
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  #39  
Old 11th January 2017, 03:00 PM
Mechcanico Lee Mechcanico Lee is offline
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Have you got the relays ? flick the lids off em and see if the points are burned and pitted
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  #40  
Old 11th January 2017, 03:15 PM
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The fault with mine is only when the engine is hot and only occasionally it sounds like the battery is flat or the starter motor is faulty or a bad earth or connection somewhere. Only does it sometimes so difficult to diagnose. So for the sake of a few pounds it's worth changing the relays.



Quote:
Originally Posted by woodpoleman View Post
J329 is 8D0 951 253 is colour grey and has 370 on the top. J53 & J695 are part No 431 951 253G are purple and have 381 on the top. They are located behind the trim in front of the steering column. The works manual page/drawing is A97-0403 (Google it), J329 is No3 and the other two are Nos 2 & 5. J329, which carries the power was only £14.95 plus vat the other two were 31.44 each plus VAT.
Can you please confirm that all 3 relays are in the same location? do you mean under the steering column?
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