When changing a 1987 Chevy pickup throttle body to carberation. Do you have to have to take the electric fuel pump out of the gas tank?

I suggest changing the pickup in the distributor. This is what fires the injectors. If you have a noid light you can check for pulse at the injector, but my guess is there is nothing signaling the injector to fire.

carberator? or throttle body? If it's TB, you won't see the gas.

I had the same problem with my old 1987 Chevy blazer s10. The problem was the ground wire of the fuel tank was rusty and it broke. So simple was the problem. But before that, I checked and change the fuses, the fuel filter, the oil pressure switch (this is related to the fuel pump to) and finely when a was ganging the fuel pump saw that the ground wire was broken or damage.

I hope this can help you.

inside gas tank you''ll have to drop gas tank to replace it, sorry

no,you will need to siphon the gas out of the tank.before you do,remove the gas cap,have someone turn the ignition on,while you stand by the tank.the fuel pump should run for a second or two. if it does ,I doubt it is the fuel pump,if it does't,it probably is

relace the throtle air idle valve.The temp switch will allso cause this problem.

Check the trottle body postioning sensor...

you have to reset base idle see manual at library for procedure

Buy a chilton manual for a 88 3/4 ton truck it will have a wire diag. or trace pump wires up from fuel tank.

check basics ...air /fuel /spark...try spraying carb cleaner into throat of throttle body to see if it starts and runs on that ...advise us/me