crank sensor

Will start,may run 2 min. or a half hr.will stall going down the road or try to and catch itself,changed crank and ingnition pick-up sensor,rotor button,fuel pump was put in new 2014.what direction do i go now???

So let's take it from the top just bought my 98 Laredo 2wd 4.0 3 days ago ran fine on test drive ran fine on the 50 mi ride home stopped at a store about 5mi from home when i left store it did not want to shift so I pulled over and shut it off , cranked it back up drove home fine. The following...