im not getting a signal from my #1 injector. i tested for 12v on each injector and was getting a +12v from all 6 except no pulse from #1. i changed all my injectors, r/r fuel filter, upgraded to a 7 series fuel pump. its sounds like its running on 5 cyl.(very rough) could it be my wiring o has the ecm gone bad? anybody have similar problems?