New 2011 V6 runs rough at cold start. - Club Touareg Forums
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post #1 of 11 Old 09-01-2011 Thread Starter
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New 2011 V6 runs rough at cold start.

I have 1200 miles on my new VR6 Lux and when I start it in the morning it runs a little rough (for about 30 seconds).

Have you found this to be normal?
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post #2 of 11 Old 09-01-2011
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Ours seems to do the same...slight roughness in idle for about the first 30 seconds.

2011 Touareg Sport VR6 FSI, Black exterior, Cornsilk interior, VentureShield clear bra
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post #3 of 11 Old 09-01-2011
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Add ours to the list. Does not always do it. Probably 2-3 times a week. Had a fuel injector fail about 600 miles ago, thought that could have been it, but no, same rough start symptoms.
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post #4 of 11 Old 09-01-2011
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It seems to depend on temperature. Mine V6 2011 was acting the same in winter time but it has not been happening much during summer. Left my car at workshop 3 days letting them to check, VW claimed that this is normal because of being V6.

Eric

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post #5 of 11 Old 09-01-2011
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Sounds like a dodgy air temperature sensor.
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post #6 of 11 Old 09-01-2011
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Quote:
Originally Posted by noobytoogy
Sounds like a dodgy air temperature sensor.
Thx

If so, should there be a fault code? It's a 3 months old car, so quick this is happening n VW workshop could not tell...

Eric

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post #7 of 11 Old 09-01-2011
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It's the secondary air pump / injection that VW uses to accelerate the heating of the cats. There's nothing wrong with your car / engine - it's perfectly normal. It's all an effort to cut down on emissions. If you think the VR6 sounds loud / funky, you should hear a 1.8T engine (from the Passat) when it's cold and the pump is running....

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post #8 of 11 Old 09-02-2011
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Check my post history....i started a thread about something similar to this. Are you referring to feeling the engine shake when you start the car in the morning?
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post #9 of 11 Old 02-13-2012
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I recently began experience this same rough start problem with my 2009 Treg 2 3.6L.

On cold (overnight) start, engine starts rough with slight misfire/backfire in the intake manifold. Heavy blue-white smoke accompanies the rough cold start. Exhaust smells very rich with fuel.

The development of this problem is somewhat concerning to me given the intake manifold explosions documented on this forum.

https://www.clubtouareg.com/forums/f6...ure-22901.html


I am familiar with the air pump injection process at cold start that accelerates cat heating. However, the problem that I am experiencing is definitely fuel related given the presence of heavy blue-white smoke and rich smelling exhaust.

No faults in the VAG.

Nooby suggested dodgey OAT sensor. Shouldn't a failing/under voltage OAT through a fault?

Other thoughts?

Moto
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post #10 of 11 Old 02-23-2012
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Same problem here , just came back from my dealer after 10000 mile inspection , left car overnight to have them check it out....but they told me they did not hear it and can not fix something when the "computer" tells them there is nothing wrong going monitor the "problem" and keep sending them my videos and see what solution they will come up with....
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