Dodge Durango 2006 limited

Hi there new to this forum. I have a 2006 durango limited with the 5.7 hemi. Recently this vehicle, especially when cold, will turn off when coming to a complete stop. For instance when driven approx three miles to first stop sign, when you come to a complete stop the vehicle will stall and I see the rpm gauge flutter drop down and kill the engine. After a warm up it will flutter at each stop but not always turn off. It will happen sometimes even when engine is warm and temp is hot outside. I ran a bottle of sea foam through the port vacuum line and put some in the fuel tank. The engine revs better but still stalls at a stop. I looked inside the throttle body and it was pretty dirty. ALot dirtier than I could have emagined. I cleaned as much as I could with b12 on a rag and sprayed some inside. It helped clean the throttle body but still having a problem. could it be the egr or ic sensor? Has anyone had this problem.