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hi all so i have a 1999 ford taurus that i just replaced the transmission on. the transmission came from a 2000 4th gen and the only difference was that the vss went from mechanical impulse to the ssd electronic impulse. the car will move but instantly shifts into second. the speedometer will say im doing 120mph when im doing 35mph and will not shift from second gear. my question is do i have to replace the computer to register the vss? since i cannot put the old one in since there is no pickup gear within the transmission itself. or am i gonna have to pull the transmission again and try to find a 3rd gen? thank you.