||I'm a couple days into a 4200 mile trip and my 1991 Tioga Arrow motorhome (Ford E350-based with 7.5L 460i engine) is giving me some problems. I'll be driving along and it will start to lack power but only for fractions of a second at first. It will get progressively worse until the engine dies, even if I immediately pull over and put it in park. It will then refuse to start. The engine will turn over but it acts like it doesn't have any fuel/spark/something. After 10-60 minutes, I can start it back up immediately (like normal) and drive for 4-160 miles before it repeats. A mechanic replaced the fuel pump and fuel filter and it drove fine for 160 miles... but then it had been sitting for a couple hours so it might have driven fine regardless of the pump/filter. A couple times when the engine died, it threw a CEL. I tried scanning it at AutoZone but their scanner never was able to pull any codes. The CEL went out whenever it was ready for me to start driving again.
Any idea what this could be or what I could try next?