The Cummins diesel in my 2004 Expedition is stuttering and losing power when climbing a grade out on the highway. Simultaneously the "check engine " light comes on. Once I have started downhill the ""check engine" light does out and the engine regains power and speed. I had the combo fuel/water filter changed yesterday and the problem temporarily went away. Shortly later the stuttering and power loss returned accompanied with little puffs of black smoke coming out of the engine exhaust pipe. I limped into a campground in Roanoke Rapids North Carolina. A call to the nearest Cummins dealer (60 miles away) suggested that I have the coach towed to the dealership. Anybody have any thoughts on what is occurring? I am very nervous about having the coach towed and wonder if there are any cautions I should be aware of in doing so
This is a very sad end to a wonderful two month trip to the northeast. Fortunately this is a very nice campground so we are making the best of it.
Thanks for listening.