I recently bought this 2000 dodge dakota quad 5.9 4x4 i changed the tranny on it i bought off a 2000 dodge durango 5.9 4x4 also at first tranny would switch to 4th at high rpms now it wont switch until i hit higher rpms i know 4th still works i was reading some threads on here and read it could be solinoid or rear speed sensor anybody on here had any issues like this ?

 

Welcome to the forum Jroxz189.

You have the 46RE transmission. Do you have any codes? Attached is the troubleshooting sheet from the FSM.