5.2Lv8 Dodge dakota stalling in drive

[cpe65]

'94 dodge V8 with 120K started occassionally stalling when leaving stop lite & then wouldn't start for 3-10 minutes; no spark during that period. now it stalls almost always when warm and put into drive, but not in reverse or idle. When stalled, no voltage at b+ coil side?, when running, runs okay....relays check ok..no codes set, dealer suggested crank sensor...no change?? any suggestions would be
appreciated