I have a 1987 F150 I-6 runs about 10-15 minutes then dies. No spark. I have the ICM tested and it fails. Change the ICM and it will start and run about 10-15 minutes and dies again. Have the new ICM tested and it fails. The coil was replaced in August past as well as the pick-up and ICM (not counting the two replaced this week). Voltage, ground and coil test good. Cap, rotor, plugs and wires good. Any ideas? At a loss

 

Get a Haynes manual & a digital multimeter, and follow the ignition diagnostic procedure in Ch.5 (usually Sec.5 or 7).