[ballysdad]

Injector pulse signal is on pin 14(gray)for 3 and 4 and pin 15 (gray/black) for 1 and 2 at the dme. Are you getting 12v on both side of the injectors or is one side 0v and the other 12v. You need a $4 noid light to verify that the injectors are actually firing and not just getting 12v constant. There has to be a problem with the 14 pin harness that is after the ecu in the engine compartment. I do not have a 87 so I do not know the location but you need to find it. I think the ground loop from the - side of the coil and the source voltage from pin 15 of the ignition switch cannot pass correct voltage through this harness. After jumping everything around it you get it to work BUT if there is a problem with injector pulse guess where that passes through as well...