I was driving home and the SES light came on and the engine started running rough, I have changed the fuel filter, the air filter, the CPS sensor, reconnected vacuum line to the turbo, checked the wiring harnesses to see if the are loose and cleaned the connections. It is more noticebale at higher rpm's, code reader doesn't show any codes. Any suggestions.

 

Check oil level, how old is the oil. A regular code reader at an auto parts store won't read all the codes on our trucks.

 

Possibly the under valve cover harness, UVCH, is loose.

 

I agree. Check the ICP too. (Unplug it then start, if problem goes away, ICP needs to be replaced.)

 

Thanks found that oil level has dropped and is in need of oil change, have taken wire connections loose cleaned and put back together.

 

ICP? not real familiar with all terminology, my first 7.3L only had this truck 2 months

 

This will help you with the Acronyms.
https://www.ford-trucks.com/forums/4...re-on-fte.html

 

Sensor locations

 

 

Thanks for all the info, found that he UVCH wiring harness was slightly unplugged problem fixed, runs and starts great now