Why does the truck start up and idle for about 10 seconds and shut down like it is out of fuel?

SOURCE: truck starts, dies. truck runs good some days,bad the next

I had the same problem with My 1990 F150 300 6cylinder 4x4.....I cahnged all the same things you did, finally I sprayed a can of Gumout through the throttle body and it worked and ran great. Now I add fuel injector cleaner to the gas and a regular clean with the gumout and the problem has'nt come back. Good Luck to you and hope it works!

SOURCE: 1989 Bronco starts but dies after a couple of seconds

try checking the thermostat control senser. it caused my bronco to start for a second and then die. after a while it would finally start and run for a while then die driving down the road. i changed the thermostat control senser and it fixed all problems of dieing

SOURCE: motor stalls when driving then starts and stalls right away.

Replace the distributor's magnetic pickup located inside the distributor surrounding the distributor shaft, the only other thing thankfully on this ignition system if memory serves me on the f 150 straight six 300 cu inch is the dura spark ignition control box, of course do the obvious tune up parts replacement dist.cap rotor,plug , sparkplugs before spending the $40.00 - $50.00 bucks on the dist.. pick up, you may have a weak a fuel pump check for adequate fuel pressure at carb 7 - 10 lbs.

SOURCE: 1990 F150 Fuel pump just replaced but wont turn on

Replace the fuel pump relay. And if your truck has dual tanks there's three fuel pumps, one in each tank and another secondary fuel pump.

SOURCE: 2000 ford excursion v10 driving down the road

Honestly you should send it into the dealer. I don't think guessing will help you. Typically it is a dirty connection into the steering column (behind the ignition key) But diagnostics need to be run and a look at the VSS system (through a good scan tool) is needed to confirm.