1990 mighty max 3.0 no start

This truck had set for 3yrs. I had been running it 6 months. Then started to miss and buck. Also lose of power. Then left wife siting no start. With the self check it said ecm bad. Had it rebuilt! Still no start. Got spark but no singal to injectors. Fuel psi is good. Do not have a ground singal form the crankshaft side of sensor in distubter. Got singal from camshaft side. And proper power on 10 to 12 volts on other 2 wire going in distubter. Got a used one from junk yard that I KNOW run when was taken out. WHAT NOW! THANKS FOR ANY AND ALL HELP!!!!!!!

Sounds very much like the Joey Crandall truck thread, also a '90 4x4 that won't start. You guys need to compare notes and hopefully solve your issues. Who rebuilt the ecu?

goecm.com rebult the ecm.

I'll look tomorrow on my '91 for sure but I seem to remember a ground for the computer that is critical for starting, something in the harness to the ecu.

run a ground from the motor or battery box to the starter and see if it starts