I just started the truck to go do a small job and it was idleing high and seemed like I had to put a little pressure on the brake to get the truck to stop. But when I let the truck cool down on the job for the last 2 hours or so it started up fine and ran fine.

 

Did you reset the PCM after any/all of the work? If not, need to.

 

The battey was unhooked during all of it