[bubba444e]

I have a 07 6.0 start stall will run as long as u keep rpm above 750. Ids monitor show good icp ipr function properly truck runs and drives as long as u keep rpm above 750. New crank and cam sensor, alternator, ipr, icp, ecm, ohm check on app circuit, harness to ficm and ecm. Stuck anyone seen this

 

[TKOPerformance]

DTCs are a big help in diagnosing problems, but they aren't definitive. If you aren't getting any DTCs it means that either the electronics are working properly, or the PCM thinks they are. If the issue is not electronic it must be mechanical. Have you tested fuel pressure? Remember, Diesels are fuel throttled. You need a specific volume and pressure of fuel at idle to maintain the idle. I would start there.

Another possibility is the throttle position sensor on the accelerator. Sometimes those set a code, sometimes not.