i have an 81 ford f 150, 351 w ,,, my truck will run for 15 or so min and then shut down,, there is no fire to the distributor,, but the coil is still hot,, and then i wait 10 min and it will fire up again,, i have had the icm checked and new coil and distributor,,, and wiring harness,,, what else could it be,,, please help