Hello,
the PO installed a King Cruise 2500 and said it worked fine. The only luck I have had was getting it to WOT for a few moments while I hold the "accelerate" button and despite my best efforts... shuts down. I worked through the calibration instructions and no luck.
Are these things known for being finicky?
A King Cruise was the absolute first thing I did to the money pit after we got it home going on 5 years ago now. And it has been completely trouble free all that time. I did have trouble when I first installed it because they draw a surprising amount of power. I had tapped it into a circuit that couldn't handle it and it would pop the breaker and drop out. By the time I got stopped to check it the breaker would reset so it took a while to figure out what was going on.
And mine has never worked worth a damn as a fast idle control. It will pull the RPMs up to about 8 or 900 and from there it goes directly to WOT.
Call King and Steve will help you figure it out he is very very friendly his number is 952 944 9644
tell him Chris sent you
RJ- there is a way of installing a shim in your governor so it has a "bump" in it around 900rpm. I have the King cruise also, and it works great in the morning for warm up at 900rpm. Good Luck, TomC