so this weekend i was on my way back home from hunting and had the a/c for about an 1hr then truck started to get hot, I turned off a/c and temp went back to normal. what could this be?

things i have done all newer
egr delete
all injectors
standpipes, plugs
oil cooler

 

1 of 2 things come to mind, low coolant, or a problem with the ac pump.
How long was the ac off?
How often do you use the ac? I mean, you have an 05, but do you use it a lot? May just need a re-charge. Start with the basics.

 

Did I mean engine temp went up??

 

Pretty much screwed the pooch on that one, my reading and comprehension skills SUCK sometimes.

That being said, how much coolant is in the truck? Have you plugged in a code reader? Define hot and normal.

 

Going to need some more info here...