I have a 2005 chrysler pacifica that will not go into over drive i have replaced the transmission soliniods and the speed sensors (both). It will eventually hit limp mode i have drove like this for 6 months so we fighred it is electrical any ideas

 

What's the history of trans fluid maintenance? If you don't know, it could be the original fluid in there. 12-year-old transmission fluid needs to be changed. Use only the fluid recommended in your owners manual. If you don't have one, download it from chrysler.com.