there very common things I find out of whack all the time ...

1. idle switch not making contact ( and adjustment rusted, or stuck,  or
allen screw stripped, and adjustment right at the limit of adjustment )

2. timing too advanced ...very common .

3. intake leaks

4. maybe some tweaking on mixture screw on AFM.

but particularily too advanced timing and idle switch not making contact.
I find that on easily half of the vanagons I work on for such issues. Like
20 times a year, it's that common.

Scott
www.turbovans.com

----- Original Message -----
From: "John Rodgers" <inua@CHARTER.NET>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Tuesday, October 05, 2010 11:18 AM
Subject: Same old Issue - RPM hunting

>  OK, at long last I finally have all 3 of my Vanagons running. I got
> the last of the injectors back this past Friday after servicing by Rich
> Cruzin at Cruzin Perfomance. Installed them, turn the switches - and all
> three engines fired right up. I'm happy as a clam in sand. Rich did a
> good job and the injectors now perform well.
>
> What I am not so happy over is that my Dove Blue 88 GL w/manual tranny,
> and my 91 Carat do not idle well. The 88 GL idles at 1000 rpm and the
> engine hunts up and down from 1000 to 1200/1300 rpm. On the Carat with
> automatic tranny, the problem is similar but the hunting is up and down
> from 1000 to 1500 rpm. I'm mystified by this. Two separate vehicles -
> same problem, almost same rpm range. - one manual tranny, one automatic.
>
> Any suggestions??
>
> Thanks.
>
> John
>
> --
> John Rodgers
> Clayartist and Moldmaker
> 88'GL VW Bus Driver
> Chelsea, AL
> Http://www.moldhaus.com