Cummins N14 still having problems

I know it doesn't help, but this is exactly why I hate electronic engines.

 

I always pull the same trailer,trailer is good,brakes released of course. It's driving me crazy because i changed all these parts and made no difference on the performance of the truck.

 

I had a 12.7 detroit before this truck,i had no problems with it but #### eld made me sell it.

 

Have you tried putting it on a Dyno?

 

No sir, i want to do that but can't find one around here. You think they could tell what the problem is?

 

Sure would be nice to get a torque and horsepower reading through out the rpm range.

If it was my truck , I have a 97 international with n-14 and the new injuectors didn't fix it and the scan from Cummins told you nothing I would have coughed up the $500 and ran it on a Dyno next

 

Another out of the box thought for you. What if they swapped that from a tractor? The ECM settings would be for a stationary unit and would suck for automotive type driving.

You mentioned you had another N-14 close, you might try swapping the ecm and see if it makes a difference. I’ve seen this a handful of times in mechanical engines where the fuel pumps had to be changed over to a different type of Governor to make the engine run right for the application.

 

The other N14 is celect plus so the harness is different than mine. We tried different ecm but same results.

 

Have you checked full pressure when has low power. No intake or exhaust restrictions?

 

The different ECM was from another truck then? Or did they program a new one based off your old one?