04 T&C 3.8-----Heres the problem. When I come to a complete stop, let off the brake and let the van start rolling without applying gas, the van starts jerking a little. Also, occasionally when I am completely stopped, the engine will stumble and almost dies. Those two symptoms started today. Yesterday I noticed that when the van is in third gear and about to shift to fourth, it feels like its about to shift but it doesn't and you feel a little jerk and then it will finally shift. I'm not sure what to think about this. The idle kinda sounds like an IAC but then I'm not sure with the other symptoms. Any advice or guidance would be greatly appreciated.