Andy454 wrote:
One other thing to try is to clean the idle air valve. It may have carbon on the the tip causing it to learn a higher value. Just remove it and clean with carb cleaner. Just a few things to try
Thanks Andy. Looking through the TB into the intake manifold and it's pretty messy in there. I'm going to take off the TB and clean it and the IAC passage this weekend.

Poking around the engine bay last night I noticed that the vehicle has a 450/525 CCA/CA replacement batt. in it. Definitely on the small side for a vehicle with all power accesories, electromechanical center diff, etc. Both times the the vehicle stalled on me I was running the climate control fan at max with AC on, radio going, headlights and brakelights on. window and mirror defrosters, etc. Do you guys think that a sudden drain on the elec. and accessory drive systems, say an AC clutch engagement, would be enough drain and drag to shut her down? Just throwing out theories.