Strange trans problem

bobliberty1

My liberty just started doing this. Driving down the road, everything is normal. Suddenly the trans drops out of drive and into neutral. I have to pull off the road, put trans in park then back into drive. Problem is, even with the gear shift in the drive position it will only move in 2nd gear. Cannot go over 35-40 due to high rpm's. Also the check engine light comes on.
After it sits for a few hours it goes back to normal. Intermittent problem.