Hello List,

OK, I have gone over the engine with a fine tooth comb looking for vacuum
leaks broken wires, etc. I can fine nothing wrong.

I did notice that the thing in the middle of the engine with a plastic pipe
going to the AFM snorkel is not "Humming" would this cause a high idle when the
engine is warmed up? I believe the part is my Idle control sensor. I don't
want to replace it until I am dead sure it'needs to be as the part is pricey.
How do I check it?

The only other thing I can think of is the Idle control unit and here again
it is an expensive part as far as sensor's go. How do I check this out?

What other things would make my idle go from 800 cold engine to 1,500 when
it's warmed up in neutral?

The van is a 1987 with auto tranny.

It didn't do this high idle until I replaced the coolant thermostat the other
day.

It does not seem to make any difference weather any asscories like the A/C is
on.

Hope someone can point me in the right direction. Other wise I am going to
spend about $500 for the idle sensor and the control unit without knowing if
they are my problem for sure or not.

again, thank you to everyone for your help on this problem.

Chris S.   </HTML>