Replacing the throttle position sensor and coolant temperature sensor now (recommended by someone with a similar problem). The fuel pressure is fine and the electronics to the TBI are okay.
If these two parts don't work, my last option would be the pump inside the gas tank I guess? lol, I'm...
I LOVE square body trucks and have owned quite a few. Currently trying to pass the torch on to my oldest son who will get his license next summer.
My 87' 1500 has run great for years but now it stalls after a few minutes of running. It cranks fine, takes gear and goes but as soon as you give...