Mine was doing this also...
once a day.....once every other day..........I was going nuts trying to figure out...
then I boiled it down to an idle control valve.......
then it went away for the most part.....two weeks later happened once pulling into the grocery store parking lot...started her right up..........and off I went.......
(pulling up to a red light, stop sign, slowly rounding a turn (corner)) any and all of these I have stalled on.....it is gone for now.....
Knock on wood!
Rich