Ram 1500 with 5.9. After sitting for a few days. After starting run a little rough like a miss. As it was raining and had been raining I though that after running it a while it would warm up and dry out. After about 2 blocks started running extremly rough and no power. Tried to make it back home but truck wouldn't pull itself. Changed plugs, dist cap, wires, no difference. Checked fuel pump relays and fuel pressure. All checked out ok, same results. Will now run for approx. 1min on start-up, idle poor the whole time and then die. Because it does start I am assuming the crank sensor is OK. What sensors are working during open loop and where do I go next? Fuel volume perhaps or another sensor?