5KTQ High Idle

[Keith Lawyer]

I had the same symptoms with the throttle switch on my 200.  Per S
Mockry, if these are the original generation design, they're pretty much
guaranteed to be bad, and most likely intermittent.  IME he's right.

Keith L

>>> "Mark and Aviva Woodland" <maviva at ptdprolog.net> 11/21/04 06:54PM
>>>
After being wakened from an early hibernation (June to Novenber) I put
Max ('87 5KTQ) back on the road today.
3/4 of the way through the 150 mile shake down cruise, the idle jumped
to
3000 rpms and stayed there for the duration of the trip. The good news
is
that the rest of the trip was all highway, and we made it home without
any
further drama.. almost like cruise control.
Unplugging the ISV had no effect, and I could find no visible tears or
intake leaks. On getting home, I removed the ISV which proved to be
closed,
and a manual inspection of all available lines proved fruitless.
I followed this with the WD-40 spray test of all known potential leak
points, hoses, lines, gaskets, valves, etc..."idling" at 3000 rpm. No
changes.
I was kinda hoping to take Max to work tomorrow, Any ideas or BTDTs
would be
appreciated.
Max '87 5KTQ 280K