Iac. It's on the throttle body and it opens and closes a plunger to control the idle. Did the battery die? Because I know when the battery on my TJ dies it will do the same thing until I drive it around for a little bit and get the battery charged up.
BTW, unless you did a motor swap, you should have either a 4.0, 5.2 or a 5.9
"Anything to do with the land, I love."
"So it's probably eighty percent luck and twenty percent skill."
I never could figure what the sky was thinking, but the soil, she don't keep too many secrets.