I have a 1987 Vanagon GL Camper.
There is an electronic sensor hookup at the throttle linkage on the engine.
I had a problem with the van idling at high rpm until I tickled the gas
pedal,  then it would go back down.  A real pain in the butt in town.  My
local VW mechanic said it was a faulty sensor and recommended disconnecting
it, which I did.  Now,  the idle problem is gone,  but unless the van is
really warmed up,  it will stall out when I come to a light.  It even does
this occasionally when the van is completly warmed up,  but rarely.

Any comments appreciated

Dane Tessler
-----Original Message-----

.>One cause of the hunting idle can be a sticking throttle switch. The
>throttle switch is supposed to sense two conditions: idle and wide-open
>throttle. Next time this happens, try tapping on the accelerator pedal a
>couple of times. If the idle becomes steady, you have a sticking throttle
>switch which you can clean and lubricate (but don't try to adjust it!).
>
>-Mark McCulley
>