[mongocanfly]

Got with my tuner guy today.. he looked thru his files where he did the ecm unlock.. he said it should be good.. and to double make sure, he hooked up and checked the ecm itself to make sure everything was there..it was .. he already had his suspicions as to what it might be.. crank sensor not reading.
He says you get the initial injector pulse, then the ecm needs to see engine rpm to continue firing the injectors...that's why I see the 1 time injector fire when cranking... since this was a running engine when I did the swap, he said I need to check the crank sensor wiring.. he said hes seen 3or4 harnesses that were pinned wrong in the past yr or so..and just to rule out the ecm ,were gonna put it in another truck tomorrow and make sure it runs..
Joyridin mentioned the crank sensor above...Still not sure how to check the crank sensor..but he did say if I had a hand tuner I could check the crank sensor signal with it...gonna check wiring 1st..