One problem related to camshaft position sensor has been reported for the 2003 Ford F-250. The most recently reported issues are listed below.
I own a 2003 Ford F-250 super duty with a 7. 3 litre diesel engine. I came over a hill and was faced with stopped traffic. I had a load in the truck bed making the truck heavier. The truck stalled and my power braking was lost. I had to steer into the medium curb in order to stop the vehicle. I came very close to hitting the rear of a small car in front of me, and she had a baby in the car. I have replaced the camshaft position sensor and the truck no longer stalls. Another name for the part is a diesel cam sensor. Many people that I know have the same problem with the same truck.