2006 6.0. Engine cranks and starts cold, but cranks with no start when warm. No codes, no hints, nothing....unless somehow it’s related to the heater that stopped working.

It’s not the HPOP
It’s not the IPR

Can anybody give me any other ideas as to why it won’t start warm? Every thread I read leans to one of those two. Thanks.

 

How about posting some data and telling us what you are using as a scan tool? You say it is not the HPOP or IPR, so I would guess that you have the cranking ICP and IPR values.

 

IPR just was replaced, as was the HPOP. Sorry, but hence why I didn’t post data. Using Veepak and OBD Fusion for iPhone.

IPR is 40%. HPOP cranks at 1000psi +

 

Insufficient data. Numbers needed.

 

DITTO, What they both said. ^^^^^^