[urq] Ideas for rough running continued - Solved!

[Brandon Rogers]

Fascinating!

I must say I am very relieved for you  Ingo.  Glad you found the culprit and 
can now get back to enjoying the car.

Brandon

----- Original Message ----- 
From: "Ingo Rautenberg" <irautenberg at comcast.net>
To: "UrqList" <urq at audifans.com>
Sent: Saturday, March 26, 2005 4:02 PM
Subject: Re: [urq] Ideas for rough running continued - Solved!


> It was the Airflow meter.  Now I need to have my exhaust reattached
> (currently held together with baling wire).  Really quite remarkable. 
> After
> replacing almost every conceivable possible problematic piece (save entire
> engine or turbocharger) with known good, I decided to look at the airflow
> metering plate again, which I initially thought was binding, and compared 
> it
> with another that I had just recently bought.  What I discovered was that 
> it
> was not sticking against the venturi wall, but rather that the pin that
> rests on the leaf spring had actually worn a hole in it!  On decel, it 
> would
> essentially stick, the pin lodging itself into the hole, choking off air 
> and
> fuel.  It would not restart unless I turned the CO screw to richen the
> mixture, which would apparently plop the plate up again.  Some pics:
>
> As seen from below (air filter side):
> http://www.dtwaudi.com/album_pic.php?pic_id=2093
>
> And from above with mtereing plate removed:
> http://www.dtwaudi.com/album_pic.php?pic_id=2094
>
>
> I highly recommend anyone who has similar sysmptons look at theirs by 
> taking
> off their igloo, removing the air metering  plate (10mm bolt) and 
> inspecting
> the "rest" area for wear or wear-thru.  Maybe that's your problem, Ed.
>
> Ingo (tired but glad I finally found the problem)
>
> Happy Easter!
>
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