1993 N14. ECM Replacement CPL#1574. P/N#3619037. im looking for the alternate P/N

What make of truck. It is possible the wiring isn't correct at the batteries. N14 uses two unswitched battery leads to the ecm. Most wire them to the batteries or a circuit breaker in the battery box. IH gets powe at the starter. these wires will have a 10 or 15 amp ATC fuse if it is 10 replace it with a 15 per cummins. I have seen more times than I can remember this being the problem. Have rodents enjoyed the wiring? If it was running when parked I doubt the ecm is bad. Get a schematic for the ecm wiring it will illustrate the two power wires.

 

Does it have constant power as well as ignition.
Sometimes the fuel solenoid wont power up until the ecm senses engine position wich takes at least two revolutions. Reasons for the rodent question a customer sent a picture one day of a mouse on his dash, text said going down the road. Ol Mikey did a lot of damage in the dash.
Do you have access to a diagnostic tool?

 

Unless the other power wire controls fuel pump solenoid, it isnt that IMHO.
Tried Cummins directly? They should be able to test the ECM etc to see where the problem lies. If a wire is not broken etc, that may be the only thing left to do, unless you know someone with Cummins Insight (IIRC) that can come to you?

Martin

 

The only function of the ignition wire is for is to signal on or off to the ecm. All other power requirements are met by the unswitched power wires.

 

That is odd my local dealer checked 2 out for me just a month ago. I will dig out the trouble shooting tree for this later today. I will get it posted as soon as I can. Do you have access to insite or any other diagnostics.