I got a 1996 F 250 4x4 351, started this about a week ago, starts good in am, go to work, it sets 3 or 4 hours then just cranks no start, turn the key on and off 4 or 5 times, fires up runs good, fine for 3 days then same thing, it don't help to touch gas pedal, it done it last night, I got it started on the way home it died going about 40mph, got started after 10 min. or so, fine for 30 miles.
Started fine this am. about 10 miles on the freeway it shut off. turning the key no good, switching tanks, nothing 10 min. later started up ran 30 miles to work, been starting all day, any ideas?