I was a little low drives fine for about 15 minutes then starts cutting out on me

Check and clean the throttle body, change the fuel filter and check your crank sensor...

Look for a loose ground connection in your instrument panel, or a dead short in one of the various accessories on the panel..... No guarantee's that that is the certain answer, but so far all the questions regarding the exact same problem has not been cured by replacing or cleaning any one specific item.... Such as the IAC, temp sensor or switch, speed sensor, EGR, distributor, cap, rotor, plugs, vacuum lines ICM..... Each one has been claimed to work by one or more people, but there have been dozens who have declared that changing any one or all of these things has "NOT" worked "for them." I'm betting on a loose or corroded ground where I said. One girl fixed her problem by taking off and cleaning the ECM ground wire connected to the engine block..... I'm going to have to dig behind my own dash as soon as I get the wiring diagrams for my truck customized the way I want them.