I have an 03 1500 3.7 drove it about 30 miles turned it off and went in store, got back in an would'nt start after about 45 min it started drove about a mie and a half it died, waited about 30 min and started everytime it started it was running smooth checked the codes 320,1299, 725 pulled back to my house chared battery cause it diedwith flashers on in all, cleared codes took top part off to see if its getting fire & gas it is so started up again and its running real rough at idle and while driving but aafter a few miles dies again but while its dieing the tach needle is jumping back and fourth any ideas please

 

It was crankshaft sensor & Coil on #3 cylinder.
Thnaks to all who looked at this thread hope this will help someone else.

 

Good follow up information.
It's great that people take the time to do that.
Gives us all a heads up if it happens in the future.
Al.

 

I agree thanks for the update.