Clean or replace the idle stabilizer valve.  If working, it should be
buzzing or humming.  I pulled mine and cleaned it with carb cleaner...

Marc

On Sun, May 24, 2009 at 12:05 AM, dj <djct2@yahoo.com> wrote:
> We have the following problem on our 86 vanagon.
>
>
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> Idle runs Up and down especially when cold. From about 1200 RPM's to 2500
> RPM'S. less once warmed up at about 1200.
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> It also is running rich.
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> adjustments were tried. And ICU was tried w/o affect.
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> We have been given the following recommendation by 2 highly qualified
> Vanagon owners/ mechanics.
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> throttle postioning switch
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> oxygen sensor
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> fuel injectors
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> can anyone add anything to this that might help us.
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> Thanks, deek
>