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Date:         Wed, 28 Aug 2002 14:32:59 -0400
Reply-To:     CMathis227@AOL.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Chuck Mathis <CMathis227@AOL.COM>
Subject:      Re: Throttle Valve Switch
Content-Type: text/plain; charset=iso-8859-1


Dave,


You have the dual function (single) throttle position switch.  The switch is almost straight down below where the cable attaches to your throttle body.  All you can see from the top are two small allen head screw fittings (likely covered in crude)in a triangular plate molded into the bottom of the throttle body.  The electrical connection is on the right side of the engine buried under the hoses and attached to the intake runners -- the (white, crude covered)wires originate from below the throttle body.


When you find it and start trying to adjust it you may find that the gap specs in Bentley will not work.  Adjust the idle position to the smallest gap you can get and still get the switch to function.  The base plates either warp or wear to the point that the switch will not return to the idle position reliably with such a small tolerance.  When I replaced my TPS I used the indicator light on the Digitool (thank you Darrell)and opened and closed the throttle while adjusting the gap until I got consistent operation.  There's a good chance that the cam plate has corroded itself in place and will be almost impossible to break loose without removing the throttle body.


Is that throttle cable attachment arrangement standard for a manual tranny?  It looks nothing like what is on my '85 auto.


Chuck
'85 Wolfsburg Westy - 'Roland the Road Buffalo'


In a message dated Wed, 28 Aug 2002 12:20:27 PM Eastern Standard Time, LISTSERV@GERRY.VANAGON.COM writes:


> Date:    Wed, 28 Aug 2002 11:34:19 -0500
> From:    Dave Baker <DBAKER5@KC.RR.COM>
> Subject: Throttle Valve Switch
>
> Hmmm...  Bentley shows several variations on the throttle valve switch.  The
> text indicates that a faulty switch or improper adjustment can cause the
> irregular idle that I'm experiencing.
>
> Problem is, I can't find it!  I see NO electrical connections anywhere near
> the throttle body nor do I see the adjustment plate or the switch itself!
>
> Can anyone help?   It's a 1985 1.9 L Westy Weekender.
>
> I have posted photos of the throttle mechanism from two
> different angles at
> the following link:
>
> http://members.fortunecity.com/davebaker1/westy/id27.htm
>
> Thanks in advance!  (TIA)
>
> Dave in KC
> 85 Westy
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