Well, thanks to all who responded. Ken, you nailed it! Turned out to be
a simple fix, I am happy to say. Somehow the new throttle position
switch got out of adjustment and was not "on" at idle. After making a
minute adjustment, all was fine. Starts right up and idles like its
supposed to now.

Should have guessed that was the problem after all the grief I went
through with the supposed "Vanagon Syndrome" only to find out it was a
bad throttle position switch.

Keith O
84 Westy "Brownie"
90 Westy Syncro

On Dec 9, 2005, at 8:28 AM, Keith Ovregaard wrote:

> New temp ll sensor was installed recently, so it's not that. I will
> check the throttle switch again to make sure it is activated in the
> idle position.
>
> Has anyone messed with the CO adjustment and not had an analyzer to
> calibrate the CO output? Or should I not even go there?
>
>
> On Dec 9, 2005, at 7:16 AM, Ken Lewis wrote:
>
>> Did you replace the TEMPII sensor?
>>
>> I would not worry as long as the Throttle Position Sensor clicks when
>> coming
>> off and/or going into the rest position.
>>
>> Ken Lewis
>> http://neksiwel.20m.com/
>> ----- Original Message -----
>> From: "Keith Ovregaard" <kovregaard@COMCAST.NET>
>> To: <vanagon@GERRY.VANAGON.COM>
>> Sent: Thursday, December 08, 2005 10:38 PM
>> Subject: [VANAGON] Rough Cold Start
>>
>>
>>> My 90 Syncro is idling a bit rough and seems to be running very rich
>>> right after startup. Smells like more unburned gas coming out of the
>>> exhaust than normal, so I suspect that it's running too rich for some
>>> reason. It doesn't quite stall, but RPM's dip to 500 or 600 and
>>> refuses
>>> to hit 850 unless I hit the throttle. Then the symptoms go away.
>>> Lasts
>>> for a very short time although I have not tried to see what happens
>>> if
>>> I don't goose the throttle. We are not talking extreme temps here, by
>>> the way.
>>>
>>> Been through about every adjustment and tested/replaced parts except
>>> that I never touched the CO adjustment. I did install a new throttle
>>> switch and wonder if it needs to adjusted more accurately. Could not
>>> find anything in the Bentley or the "Bentley Lite" manuals other than
>>> the usual fuel injection test procedures, blah, blah.
>>>
>>> Any ideas?
>>>
>>> Keith O
>>> 84 Westy "Brownie"
>>> 90 Westy Syncro
>>>
>>>
>>
>