As the subject suggests, my D stumbles at a stop when cold. It even stalled once. One time it jerked forward a little bit as if it was having trouble downshifting to 1st as I stop. I have no idea where to start. Recently i changed the tranny fluid, diff fluid, and oil. I changed the plugs to see if that helped and it didn't I have a 4.7, 4WD with an automatic tranny.

 

hmmm maybe the torque converter isnt disengaging when you stop.