The 721 that we changed the injectors on will not crank at all now. All fuses are good, we get a crank signal to the relay going to the starter but no power to the relay to switch it over. Both of those wires come straight from the ecu. Continuity is good in the wires. It is like the ecu getting a signal to not start motor. Tranismission in Neutral
I have figured out the problem. It was the connection going to the ECM, there are about 40 wires going into one plug and a couple of the tiny pins were not make one contact. Was able to wiggle the wires after I took the plug apart and figured it out.