I found the source of the problem. There is a fitting that connects a large
hose to to the small diameter hose at the idle speed boost valves that had a
large crack in it. I made a quick fix with electrical tape that will be in
place until I can get a replacement.

Ken Ehlert wrote:
>
> My '85 Westy suddenly has a real rough cold idle and after warming, a fast
> idle (1800 rpm).
>
> There is a wire that runs with some tubes/hoses in the passenger side rear
> wheelwell that I accidently jerked while tapping the starter with a hammer (I
> have the new starter, just haven't installed it yet). I checked in the engine
> compartment and the wire is still connected. I haven't yet traced it back in
> the other direction. Anyone know where this wire ends up under the vehicle?
> Anyone know the purpose of this wire? Any chance this wire is related to my
> idle problem? Any other ideas?
>
> TIA,
> Ken Ehlert
> 1985 Westy
> 1964 Convertible Beetle