I have a Yale Fork lift. (model GLP050ZGEGAE084)
It has the 3.0L GM motor running on propane. Circa 2002 ish.

It looks to be all electronically controlled.

The fork lift developed high idle after pressure washing the engine bay and replaced the valve cover seal.
The MIL Light comes on right away after starting.

I check all the electrical connections and they are dry. The problem is persisting after it sat over the weekend. I'm 90% sure its not a vacuum leak.

All fuses are good.

Any links to a solid manual???? (NOT THE USER MANUAL)

Could I have **** off a stepper motor or something????