My '85 Weekender is doing the same thing. I was going to pull the throttle
body and give it a good cleaning and adjustment this weekend. I suspect
that the throttle never fully closes but the burp snaps it back into place.

--t

On Wed, Jun 24, 2015 at 1:30 PM, thewestyman <zolo@foxinternet.net> wrote:

> The throttle switch must be looked at.  It looks like it does not come back
> enough to switch it to get to idle mode.  There must be a click when you
> release the throttle.
> To adjust, you would need to use a small allen wrench.  One does the
> locking
> the other the adjusting.  As you look down on the switch that's under the
> throttle valve.
> Zoltan
>
>
> -----Original Message-----
> From: Steve Williams
> Sent: Wednesday, June 24, 2015 11:27 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Intermittent high idle - able to make "go low"
>
> Hi,
>
> I have a 91 Westfalia, manual.
>
> After driving for a short period of time, when I take my foot off the
> gas, the engine only idles down to about 1800 rpm.
>
> If I "burp" the throttle... by pressing gas pedal towards the floor &
> releasing quickly, the idle will come down to normal.
>
> These symptoms really make me think something physical, rather than
> electrical, vacuum, etc.  However, I've checked the throttle cable &
> what it attaches to and everything seems to be travelling smoothly.
>
> Annoyingly, I can't replicate this without driving the vehicle. Humm...
> as I'm typing this email, I just thought of driving the vehicle, pulling
> over to the side of the road & popping the back open...  but until I get
> a chance to do that, is there any "list wisdom" that could give me
> pointers on where to look?
>
> Additionally, how tight should the throttle cable be?  There is about
> 1/2 inch of slack in the throttle cable.  It is not very clear if it's
> adjustable on the engine end of the cable or not...
>
> Thanks,
> Steve Williams
>