Big Bird

ok, Mike, do you have any suggestions as to where I can find a ECM that will work? Closest dodge dealer is over 2 hours away. what has to match up if I get a used ECM? Will it have to be reprogramed for the truck anyways?before I purchase a replacement should I plan on disconnecting the Quad to ensure it is not the problem? I just really hate the idea of throwing money at parts without thinking problems through.

I am having an issue with my truck not wanting to start when it is cold out. symptoms are below say 40-50 degrees the fuel pump will not come on, I get a CAD communications error, I have no gauges, no wait to start light, and I do not hear any relays click when I turn on the key. I have not seen any codes using the key trick. now here is the fun part. If I plug the truck in for a few hours it will start just fine and everything works properly. Truck has new batteries, and the connections are tight. Should I be chasing grounds with these symptoms, or should I be looking for a cold solder in the ECU, or am I just chasing my tail without diagnostic equipment to see what sensors are reading? When it works properly fuel pressure shows 20 idle 17 wot. I am thinking this is a temperature related open in a circuit somewhere as if I warm the block the problem goes away.Apparently my sig is not showing, 2001 ram 2500, 4x4, 5 speed, Raptor 150, Quadzilla adrenaline.any thoughts will be welcome.