My 86 2.1 engine has a funny quirk.  Sometimes it decides to idle at
1900 rpm.  This seems to be happning more often now that temperatures
are starting to cool off outside, and it seems to do it more at
operating temp.  Sometimes, it just stays there, sometimes it comes back
down to 900 rpm.  No real pattern as to when or why or anything.

Looking through the Digifant (_digifunk_) manual, it says to check the
throttle switch.  Doesn't seem like that's it to me.  Now going onto the
idle stabilization circuit, I see it gets an input from the coolant temp
sensor (now I recall something about that from before on the list...).
Of course, the book says to use special VW adpater, yadda, yadda.

Now as you can tell, I've only been sitting here and staring at the
books.  I haven't stuck my head under the engine cover yet.  I was kind
of hoping someone had encoutered this before and could give me a good
place to start checking voltages, etc (after all, that's the best thing
about this list - almost every problem has been previously encoutered
and a solution found!).

TIA.
Keith Adams
Calgary, Alberta, Canada
1986 Vanagon GL Westfalia