limp mode on 2002 Dodge Intrepid

why wont my car rev over 2500 rpms I just done a new bottom end in car and sounds like new but when i drive the car shifts great as long dont try to exceed the 2500 rpms if so acts like revlimiter starts and goes into limp mode have to stop turn off car and restart to go again. changed the trans range sensor but still the same.

Asked by for the 2002 Dodge Intrepid
Have you checked for any diagnostic trouble codes? If so, are there any stored?
When you did the work, did you have the timing chain/belt off?