Wapiti7
Junior Member
Good morning everyone, looking for any advice possible. I have a 2003 dodge with a 5.9 Cummins. 375,000 miles, new injectors two years ago, and a new lift pump last summer. I live at higher elevation and going up over mountain passes the truck slows down to approximately 28 miles an hour and will not go any faster until I reach the top of the pass at which point it dies. So I throw it in neutral hit the key and it fires right up and off I go. On flat ground this never happens. I checked the turbo and it seems to be in good shape as well but I can't afford to just start throwing hundreds of dollars worth of random parts at the truck. Seems to be a fuel issue but not sure. Thank you for any input