Need help fast. I have a 1999 F250 7.3 Lt. Powerstroke. The truck will idle for 10 to 15 mins then die. No stuttering, just dies. I replaced the fuel filter, checked all fluid levels, and have no warning lights. After replacing the fuel filter I was able to drive about 6 miles before the truck just shut off. It started about a week before driving on the freeway at 65 I felt a slight stuttering. Now I can't keep it running. I have added water remover to the fuel tank and injector cleaner but still dies after about 15 mins under idle in the driveway. Please give me a direction to go.