I have a 4400 series 2003 dt466. This truck has about 75,000 miles on this motor. Its real slugish and slow getting the rpm up to speed. No power at all. The cruise control quit working, electric horn quit, the digital odomter went back to zero, trip hour goes up and down. It does not smoke, make any unusual noises. I have both fuel filters changed. No codes show up. Also the speedometer is way off. Just pulling out it goes to 85 miles per hour. Any body out here has any problems or suggestions on what to check. Thanks in advance. "the eagle"
