Hello, i have a 2008 F150 Lariat with 68,000 miles. the serpentine belt and pulley were just replaced in it (the belt snapped thankfully in my driveway). now when it has ran for 15 min or so and i stop at a stop sign it will stall. it will start back up and gauges are all fine and no warning lights will be on. i stopped at autozone to see if there were any codes coming from it and it all came back fine...any ideas....from what i have read i am thing it might be the IAC but wanted to get some more input to see if anyone else has had this issue. thanks for you help.

***UPDATE***

i disconnected the neg on the battery and reattached to reset the comp...truck is running fine now

For your future info, you don't have an IAC, you have an electronic throttle.

Good job trouble shooting.