Hi all, I am new to the diesel world. Just sold my gasser ('01 Ram 1500) and got a used '03 2500 auto with the Cummins (non-HO). It only has 29K on it. When I was driving the other day, it felt like the engine was going to die on me. I pulled over to a parking lot and let it idle...as it was idling the rev's would go from 400-1000 ??? Then when I go to drive again, it is really sluggish when I hit the gas until I floor it...then its ok. It's happened a number of times already, but no engine codes yet. I've been reading on this site about injector pumps and lifter pumps going bad, does this sound like one of those? It sucks because happens pretty intermitently right now, so when I take it to the stealership, they tell me they cannot reproduce the problem? UGH!!