Dodge Ram 3500 2005 Cuts out while driving.

I would start with the Engine Performance Diagnostics. So, the best way is to check the codes in the computer to see if you have a sensor that is going out. here is link to some good repair info: http://bit.ly/mitchell_repair_manuals_online See if you have any CAT codes, because this vintage Dodge truck has had REALLY a lot problems with their catalytic converters melting down and plugging up.

My truck did that a couple of times. Check out all the spark plug wires.....That was the issue on mine it just come loose but i pushed it back in.