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#1
8th April 2013, 10:57 AM
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Flashing coil light and MIL
Hi everyone,
My 4.0lt D3 is having a few issues at the moment  and I'm wondering if you guys can help me sort her out. She was down on power the other day and then the coil light started flashing. A short while later the MIL light came on as well. This makes her low on power and means I cant overtake anything as she just runs out of steam at just over two and a bit thousand revs. I've done a scan and the results are below. 3 Faults Found: 19591 - Intake Manifold Runner Control: Lower Stop not Reached P3135 - 000 - - Freeze Frame: RPM: 651 /min Torque: 101.4 Nm Speed: 0.0 km/h Voltage: 14.21 V Duty Cycle: 89.2 % Duty Cycle: 20.5 % Duty Cycle: 0.4 % Temperature: 40.5°C 17416 - Mass Air Flow Sensor 1/2: Implausible Signal P1008 - 000 - - Freeze Frame: RPM: 966 /min Torque: 39.0 Nm Speed: 94.1 km/h Raw, Form. N/A: 000 000 051 (no units): 74.0 (no units): 1.33 16620 - Manifold Pressure / Boost Sensor (G31): Implausible Signal P0236 - 001 - Upper Limit Exceeded Freeze Frame: RPM: 126 /min Torque: 19.5 Nm Speed: 0.0 km/h (no units): 2.0 Raw, Index/Key Err.: 255 000 006 Raw, Index/Key Err.: 255 000 040 Absolute Pres.: 999.6 mbar Absolute Pres.: 1397.4 mbar Readiness: 0 0 1 1 1 I tried cleaning the MAF by spraying it with electrical cleaner but that hasnt done anything. At the moment I can clear the faults and she drives ok ish, down a bit on power, but as soon as the ignition is turned off and then on again, the coil light comes back on. The MIL comes back eventually, but not straight away. cheers. 
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#2
8th April 2013, 12:38 PM
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Could be the dreaded inlet manifold flaps? I'd suggest it needs a professional inspection and probably best not to drive it in case it sucks anything into the engine
__________________
===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD=== 2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus 2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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#3
8th April 2013, 12:46 PM
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The point at which the Stage 2 manifold valve come into operation is around 3360rpm and the torque figure falls away if the actuator doesnt come into operation.
See: http://forums.audiworld.com/showthread.php?t=2801728 for a good run around this subject. 
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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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#4
8th April 2013, 01:25 PM
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Quote:
Quote:
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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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#5
8th April 2013, 01:35 PM
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Good job somebody knows what they're talking about lol - I'll park my thoughts in the scaremongering collection
__________________
===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD=== 2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus 2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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#6
8th April 2013, 01:47 PM
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Perhaps there was clue I should have noticed in shropyfella's first few words "....My 4.0lt D3 ...."
 I'll go back to polishing and cleaning.
__________________
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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#7
8th April 2013, 02:29 PM
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Quote:
__________________
===SOLD===2002 Audi S8 D2 Final Edition (yes, really) in Avus Silver with purple extended leather===SOLD=== 2011 S5 Sportback in Phantom Black with black Super Sports leather, 9x20s, tech pack high, adaptive xenon plus, intelligent key, memory seats pack, sunroof, B&O, Audi Drive Select & quattro Sports Diff, DAB, parking system plus 2015 VW Golf GTI Performance Pack in Carbon Grey with black Vienna leather, tech pack (Discovery Pro nav & Dynaudio), DCC, factory towbar and retrofit RVC
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#8
8th April 2013, 06:19 PM
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Who's polishing and cleaning without showing us pictures??
 Sounds like at least a MAF issue to me if not boost sensor as well as ainars has already said, MAF's are a bit of an 8 weakness I'm afraid
__________________
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
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#9
9th April 2013, 11:25 AM
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Thanks for the response guys. Just a couple of questions, do the codes indicate which MAF, boost sensor and manifold is the problem or is it sensible to change out both sides when a problem arises?
The manifold actuators seem to move freely enough by hand when the engine is off but I've read in a thread somewhere that you can cycle them with vagcom to check if the electrical connections are ok, anybody know how you do that?
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