um acctually i work for ford and it needs a new seliniod body(valve body). ive replaced about 8 of those here in past month. should be warranty. hope this helps ya.
take it to your dealership you need new shifter seen alot of those. the v8 6 spd auto trannys have probs with the shifter. they got a updated one thatll take care of it shold be under warranty. hope this helps.