Honestly I can't tell which truck you're even talking about. Seems like you had issues with two different 2005 trucks here?

 

honestly, neither can i, i'll just make a new thread with a break down

 

i have a 2004 f350 6.0 diesel.. dually with issues, ok, i checked volytage of the ficm and it checked at 48 volyts. now what? it wont start unless i use starting fluid, i did try the klein booster and injector cleaner and has made some diffrence to be honest with you. so been adding to every fuel stop. truck still hard to start and also surges on hwy..replaced both batteries, fuel filters, and now i have no idea what to check next... Help me please....also the starter is also now hanging up and will keep cranking even after key is turned off... Codsperm