Interesting that this came up at this time. The minute the weather got
cold, my engine hangs up around 2000 or so RPM when I let off the gas
and push in the clutch. It will idle down around 900-1000 if I keep it
in gear until the RPM's are below 2000. I'm mystified. Did this for a
time last year then quit all by itself. Not so this time.

Any suggestions?

 GL Driver
John Rodgers

Tim Marciniak wrote:

> My 90 Vanagon has just developed a very unstable idle.  The tach is
> jumping from 800 to 3000 rpm at a frequency of about every 1-2 sec.
> Any one have any ideas what this could be.
>
> Tim
>
> 90 Multivan
> 87K