Just got a new 396 stroker installed in 94 camaro Z28 and it won't fire up. We have good fuel pressure,spark and power to the injectors.But no ground pulse at the injectors from the PCM.Any ideas on how to diagnose the PCM?I don't have any wiring diagrams so I don't know what controls the ground pulse from the PCM to the injectors.ANY HELP WOULD BE GREATLY APPRECIATED....Tirefryr

 

Look here http://shbox.com/1/schematics_wiring.html. I'm not sure if Shoebox has the injector schematic or not. He does have the PCM pinouts though.

 

Thanks for the suggestion.Any idea what controls the PCM to send a ground pulse to the injectors.Like maybe from the optispark???