I think that might have done the trick. It was really caked with grime so
I took the degreaser to both the stepper motor and the hole it mounted in
and cleaned it all up. When I re-installed it I started it up with the
intake elbow off and nothing had changed. Then I put my finger over the
odd shaped hole which ports down to the stepper which is on top of the
intake flange just to see what would happen and it immediately dropped
down to a normal idle!?! Remounted the intake hose and took it for a test
drive and it ran just fine. I dunno! Hope it stays that way. The stepper
motor was really caked and I don't think it could have moved the plunger
at all in the condition it was in. Thanks for the info, but don't go too
far away as I am posting another problem after I eat dinner. Steve in OKC

 

I think that might have done the trick. It was really caked with grime so
I took the degreaser to both the stepper motor and the hole it mounted in
and cleaned it all up. When I re-installed it I started it up with the
intake elbow off and nothing had changed. Then I put my finger over the
odd shaped hole which ports down to the stepper which is on top of the
intake flange just to see what would happen and it immediately dropped
down to a normal idle!?! Remounted the intake hose and took it for a test
drive and it ran just fine. I dunno! Hope it stays that way. The stepper
motor was really caked and I don't think it could have moved the plunger
at all in the condition it was in. Thanks for the info, but don't go too
far away as I am posting another problem after I eat dinner. Steve in OKC