I've got a 05 F-350, i just installed a bullet proof EGR cooler and oil cooler, it seemed to be running pretty decent, until today. i drove my son to school and back home (about ten round trip) tried to start it 3 hrs later and it just turns over. i've double checked all the connections, and fuses nothing seems to unplued are blown. any ideas???
it has 78000 miles daily driver not driven to hard pull trailers 4/5 times a month

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just talked to a local mech he seems to think the icp? may have gone out. is anyone fimilar with this being a probelm. have also heard my hpop might have gone out. would it just go bad all the sudden are thrown a code first?

 

I am no prefessional by any means . maybe your cam position sensor? maybe check some fuses . just a newb.