issue with my dakota

when i first start it cold no issue driver it for 15 min hit 3 or 4 lights by time i come to a stop at the 5th it may or may not die and like i said befor 80% time going in to R it will die but stumbles each time be for shuting down it i can catch it in time i can power brake it just a little and it will be fine at that stop ...going down road no power issues no stalling issues no hic-up of any kind i will attempt to do all the things you have all mention and thank you for your help