Stalling, can anybody help?
 

I have an 04 Endeavor, and it has been stalling when in idle at stop lights or intersections. I put it in park, and it fires right back up, and the check engine light never comes on. Yesterday I was driving about 40mph, and the vehicle lost power, and i had to coast off the side of the road. Again, I put the car in park and it fires right up. It has also has been hesitating when accelerating between 35-40mph. The dealership has been no help, and I am desperate for any answers or things to try.