Chrysler Sebring 2000 convertible Jxi

Soo here we go..
When I start my car it idols super high at 2000rpms
It also doesn’t shift out of first or second gear one of the two and while driving the Tom’s increase a lot. I can. Only drive up to 45mph and the rpms never drop.
Even if I manually shift the gear into low 3rd or drive it doesn’t do anything. I’ve changed the input and output sensors and bought a new tcm computer just incase.
I need to know why my car won’t shift