My Dad has a 94 2500 Cummins Truck. He went to pick up a car for me in N.C. and his truck is acting up. He says that its acting like a plugged fuel filter. He stopped and changed the filter and said the old one looked fine. No power after driving it for a few minutes. If it sets an hour it will drive ok alot farther.
He checked codes and it has code "12", "Battery has been disconnected in last 50 cycles.
AND
Code "34" Open or short in the Speed Control Solenoid Circuits or Speed Control Switch Voltage to High or Low.
any help would be very appreciated
thanks


All MOPARS & nothig else.