Ford Transmission Help (Sorry My Truck Is Not A Mopar At This Time...)

KP,
IF you drive it anymore, lock out OD. sounds a lot like a Crown Vic I had. check the control cable at the intake plenum. mine had broken loose from the accelerator linkage and acted a lot as you describe, delayed shifts, overdrive just dropped into neutral. was told I was lucky for not driving it much in OD as it would have torn up the trans (take that with a grain of salt, came from a trans guy, but one I trust ). he put like a lead fishing sinker on the cable and all was well again. whatever you find, hope it is easy and cheap. paul