transmisson no upper gears? on 1997 Ford Taurus

car goes forward, and reverse. but wont come out of first gear

Asked by for the 1997 Ford Taurus
sounds like your car may be in fail safe mode due to a sensor issue or the transmission has faild all togethr.
replaced speed sensor, still no upper gears, any ideas?
Did you change the trans oil and filter? If so and you still have no upper gears it may be a sensor inside the trans. Not the Speed sensor!