This has been going on for over 1300 miles now

It’s an early 2003 ram diesel, automatic 35 gallon fuel tank with 225,000 miles

I initially thought it was a bad tank of fuel, but it’s been going on for too long

I did change the fuel filter shortly after the problem started

As your driving along the truck loses throttle, like you're out of gas, but a second or 2 later its ok and you keep running

It’ll only stall if you're stopped or going very slow, like under 15 mph

It appears to be effected by stopping and going

I can travel 300 miles and it doesn’t happen, but if I’m stopping and going a lot (driving in an area with a lot of stop lights) it can do it as often as every 5 or 10 miles. But not always

It was also doing it when I would first start and take off after 1 mile, then wouldn’t do it again, until after I would stop and then go again

It’s not the most consistent, but the above is the best handle on it that I can get

I was thinking either something in the fuel tank or the lift pump (fuel pump) in the tank

Any ideas?