Cecil,
   The switch is operated by a cam on the throttle axle. The switch should
close at both extremes of it's travel.
Ken Lewis
http://neksiwel.20m.com/

----- Original Message -----
From: "Eastman, Cecil @ ELM" <Eastman.C@ATWOODMOBILE.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Wednesday, October 17, 2007 9:31 AM
Subject: [VANAGON] Running rich.....me too

> My Fellow Pilots,
>
> My '85 is also running rich.  Although it may have been doing so for a
> while
> now, it has really been bad since I installed a new throttle valve switch
> (the 2-in-1 type).  Could this gizmo be the culprit?  To be honest, I'm
> not
> quite sure how the thing is supposed to operate:  it's supposed to
> physically open or shut the valve, right?  The way it sits under the
> throttle body, I don't understand how it accomplishes this.
>
> The problem was so bad this past weekend that it wouldn't even start.  I
> was
> forced to get it towed to a shop that charged me $237 for plugs (that
> could
> have been cleaned), a distributor cap (that they didn't even use; they put
> the old one back since it was only a couple of weeks old), and a
> rotor(okay;
> I needed a rotor), and lots of head scratching.  They claim to have
> checked
> fuel pressure (okay), but said they have no equipment to test the
> electronics.  My problem is that neither do I, unless a simple
> multi-tester
> can do the job.
>
> Will proper adjustment of the throttle switch likely relieve the fuel rich
> symptom, or do I have other issues to consider?
>
> Thanks, as always,
>
> Cecil
> '85 Westy Wolfsburg "Der BrotKasten"
>