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  #1  
Old 24th June 2015, 05:31 PM
barzya8 barzya8 is offline
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Default Engine Stalling

Hi Guys,
Can anyone please throw any light on the following problem.
Engine idles at 780 to 800 RPMs No fluctuation
When it gets up to temperature whilst revs remain constant, it just cuts out.
It did this for 4 or 5 times in succession.
It starts again immediately with no problem.
It also has a tendancy to do this when slowing down for either a roundabout or junction.
Carried out a scan which showed no faults on the engine.
I checked the MAF and found this to be completely clean.
Also thought it might be dirty fuel, so went out and put BP 98 in the tank.
Still it cuts out, when left running on tickover.
It does not do it all the time, sometimes it runs fine
Could this be a blocked fuel filter or something else.
Thanks,
David
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2002 S8 Final Edition, Avus Silver with Red leather interior
Guildford, Surrey
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 :
1997 A8 Quattro Sport - Now sold when S8 FE purchased
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  #2  
Old 25th June 2015, 10:43 AM
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steamship steamship is online now
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Default

IT posted a thread some time ago about common faults and one of them sounds similar to your problem. The thread is here:

http://forum.a8parts.co.uk/showthread.php?t=34 - "Stalling coming up to junctions (mainly pre face 4.2 ABZ breather pipes)"

There is also the following thread which was posted last week, which may be worth a read, if you haven't already done so:

http://forum.a8parts.co.uk/showthread.php?t=10165
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2001 A8 D2 FL 3.7 Q - LPG Conversion, Engine: AKC, Gearbox:FBB, Colour:LY5X Aqua Blue pearl effect, Interior:WJ light beige/dark beige valcona leather with burr walnut inserts

My DIY jobs - Replaced alarm horn, Replaced Coolant Temp sensor, Updated RNS-D firmware, Installed Reversing Camera and Digital TV, Dashcam Installation, Retrofitted Rear Blinds, Auto-Dimming Rear View Mirror, Chrome Boot Struts

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  #3  
Old 30th June 2015, 09:15 AM
barzya8 barzya8 is offline
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Problem Solved.
It turned out to be the engine idle module, right at the back of the engine on the top under the main cover plate
Unpluged it, removed the three nuts holding it on and cleaned the whole thing with carb cleaner and put it back.
Not had the stalling again since and engine runs much smoother now.
Hope this helps anyone else experiencing this problem.
Not sure if this needs to go onto the sticky common faults.
David
__________________
2002 S8 Final Edition, Avus Silver with Red leather interior
Guildford, Surrey
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 :
1997 A8 Quattro Sport - Now sold when S8 FE purchased
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  #4  
Old 1st July 2015, 10:08 PM
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Goran Goran is offline
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Good to hear it was a easy and free fix. Good reminder for all of us to check idle module and throttle bodies for excessive gunk.
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