F150 mysterious stalls

1995 F150 occasionally stalls about 10 minutes after leaving home. Will restart and run fine rest of the day after waiting about 15 minutes. Have replaced the electronic ignition module on a hunch . . . any more clues?

I am leaning towards a sensor that alters or reports on settings that change when the car warms up. The fuel/air mix and/or timing are different once warmed up, and the sensors play a role in this.