Ford Repair Questions? Ask a Mechanic for Answers ASAP
I would start by removing and cleaning the IAC. This is mounted to the throttle body. You can remove it, then clean the heck out of it with carb cleaner. Clean up the throttle body where it is bolted on as well and then put it all back together. If the pintal is sticking then the truck will want to stall at idle and usually it happens at certain temps.
I am sending along a diagram to help you locate it as well.
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