Won't go over 3000rpm without jerking.

What is your question?

Trying to accelerate quickly is impossible at this point. It is as if it can't change gears on its own; 1st and 2nd are fine. I have to let off gas until under 2500rpm and then slowly press on gas to get to the speed I need. When it gets to 3000rpm it jerks as if it can't get the gas it needs. Engine light is on.