I was driving my 7.3 down the road when all of a sudden it died like I had turned the key off and wouldnt start back up. I towed it to my houseand trued to start it on starting fluid. it would start for a second then die.Thenn hooked it up to a code reader where it pulled codes p0603 p0344 and p0340 two of which are cps codes. I replaced the cps and it still wont start. It doesnt pull any more codes. Any ideas of what else it could be?

 

Never ever ever use starting fluid! Did you check the oil?