Charging Problem

Yea i'm checking it at the battery when it's running you can take the cable off and it will keep running as long as you rev it up a little but at idle it will run for a min. and die but i do have the fans running and has a msd to.........
Taking battery cable off when running, bad thing to do. The battery is the filter for the bumpy rectified 3 phase output of alternator. Easy to damage radio, electronic regulator, or mopar electronic ignition.