Did you google it ? I did,-here's just one - - http://www.ford-trucks.com/forums/95...when-warm.html

 

Would seem as though all roads lead to a faulty Idle Air Control? I have a somewhat new Idle air control.. maybe I should check the voltage. Its odd how something like that would shut down the whole system, but I remember my old IAC would often make my truck accelerate uncontrollably before I replaced it. That will be what I look into first