Isx15 randomly shutting down

[redtop23]

Well....update for y'all, truck is fixed! I had a apt set for Monday for two techs that were supposed to get together with a cummins insight and go haywire on troubleshooting. But I sat there thinking..and thinking, and thinking. My symptoms of shutting down ONLY during idle directed me towards what actually holds idle on this engine. What can cause the fuel pressure to fluctuate just above or below the minimum requirement, leading to stalling without consistently logging a "low fuel pressure" fault code? Or what part has wires goin to it that can throw a code but also has mechanical parts that can stick but the ECM may still believe it is operating correctly, preventing an electrical fault code? The dam FCA! The Fuel control actuator that sits on the high pressure pump. Replaced it, truck is back in service like nothing ever happened.

No offense to anyone here but I get so dam tired of people always blaming the de mandate on my def for any engine issues that comes up. I could roll up to a shop and be low on windshield washer fluid and they will blame it on my def system lol. I 100 percent agree that the wrong program can cause a whole can of worms but I strongly think that would happen soon after. I drove this truck for 6 years after the delete with zero issues, I doubt they would suddenly come around now. Just my opinion, and I guess I'm still yet to find out. 1,150,000 miles and still running strong. Original engine, original turbo/actuator.
Anyways I'm done ranting, happy I fixed it. Thanks for the help, Rawze keep doing what your doing! I learned alot form your page and videos.