If my pickup starts then shuts off does that mean the fuel pump is bad

could be fuel pump, test it with pressure gauge

Check the fuel pump pressure. IF this is heat related, it could also be a bad gasket causing a vacuum leak. The other thing could be the fuel line is getting too hot causing the gasoline to create a vapor lock.

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you need to check this when it does not start fuel pressure at the fuel rail , spark at the plugs, power at the fuel injector wire that will tell you whats wrong . if there is no fuel pressure its a bad fuel pump swap the relay with another one to test it if still no pressure the pump is bad . if you have fuel pressure and wont start spray starting fluid in the throttle body see if it starts this tells you if its spark or fuel if it does not start its spark possible bad distributor or coil if it does start that means you have spark and with fuel it will run meaning your injectors are not firing = no power at injectors = bad crank sensor its 38.00 at auto parts stores driver side top of trans bell housing make sure you push and hold it down when tightening the bolt

sounds like the fuel pump. my friend had same problem,,bad ground caused fuel pump to over heat..resecured and cleaned ground and problem fixed

The fuelpump is primed by the oil pressure switch.When the fuel pressure reaches normal PSI the computer shuts that pressure switch off and turns thepoweron to the fuelpump relay.You have a bad fuel pump relay

turn the key on with everything quiet around you if you hear a buzzing sound (eletric motor running) for a couple of seconds, then the fuel pumps working!
there are crash switches that also go bad, they shut gas off in case of a crash, there is also a fuel pump relay switch, might be able to tap it and start the truck, if it starts while it's running tap it again if it stalls, there's your problem

if you had a fuel pump problem before than you probably have a bad fuel filter also if not that then it could be the engine coolant temperature sensor

no fuel shut off switch on pickups that i know of possibly bad fuel pump find your red bypass wire at relay to test pump

sounds like the "run" fuel pump relay is going bad. This truck should have two different fuel pump relays on it. One for the start cycle and one for run. They should be in the fuse block under the hood. I don't know which one it is though but you should be able to tell by feeling them while someone else cycles your keys on and off. Note that if the fuel pump has already pressurized the fuel line it may not kick on when you turn the key.