ISX to X15 swap headache. PLEASE HELP

[Rawze]

(11-07-2023 )weissman379 Wrote:  So I did the engine swap and was fairly easy. The problem I'm having is the truck is not starting. It just cranks but doesn't attempt to start not even with starting fluid. My question is, what can I check to make sure my ecm is good. I'm getting 5v reference on all the sensors. Or is it not starting cause I need to reflash the ecm for the for the new specs on the x15. I don't have a laptop right now to look on insite will be getting one in a couple of days. Any help is appreciated.

does it have the red stop engine light in the dash on?.

is it getting proper fuel pressure while cranking?.. and what is that pressure when looking at it in insite?.

Does it show a few psi of oil pressure on the oil pressure gauge in the dash when cranking it after several seconds?

Have you followed the crank, no-start troubleshooting procedures found on Quickserv?.

you need to connect to the ecm and find out what is wrong.