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Old 16th February 2009, 08:32 PM
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Default N156 Intake Manifold

I scanned my engine today using a VAG COM and it came up with N156 Intake Manifold. There seems to be nothing wrong with the engine, no misfires etc... Any ideas where I could start looking?
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  #2  
Old 16th February 2009, 09:00 PM
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RossTech wiki Here

Intake manifold change over valve maintenance here

I think the valve enable the change from short to long intake tract on the variable intake length.
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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.

Last edited by Conan_the_Librarian; 16th February 2009 at 09:03 PM.
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Old 17th February 2009, 11:07 AM
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Thanks Conan, It did feel really sluggish once when I put my foot down at higher revs, but seems okay now (unless I've got used to it) I havent got a clue even with them instruction where to start still!
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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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Old 17th February 2009, 11:56 AM
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Have aread of this thread

and this thread
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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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  #5  
Old 18th February 2009, 10:24 AM
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Thanks Mike, Call me stupid, but still not really sure where to start from, where is the vacuum hose I wont be able to check the output as im cr*p with electrics, I will have another read, and check the fuse. I have to say though, the car was really sluggish yesterday, then I stopped and turned the ignition off to put some screen wash in and I couldn't believe how it was picking up, felt like I had a lot more torque and general power. Could this be due to this valve, deffently wasn't my imagination. Car was transformed.
P.S Is it me or is Audiworld the most confusing forum in the world!?
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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

Last edited by Singh; 18th February 2009 at 10:29 AM.
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Old 22nd February 2009, 08:23 PM
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Does anyone know which fuse if for the inlet manifold valve? Thanks
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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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  #7  
Old 22nd February 2009, 08:29 PM
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Audiworld is old skool forum style. You know the yanks. It's Amerikan it's gotta be right!
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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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  #8  
Old 23rd April 2013, 09:27 AM
ulfilias ulfilias is offline
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Where did you go with this ???

I seem to have the same issue and a similar lack of expertise!

Ta,
Lee
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Old 23rd April 2013, 08:34 PM
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I genuinely cannot remember, what I do recall though is replacing some sort of sensor, I got the part from Audi (about £40), that could have been a coolant temp sensor though.
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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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