turbine shaft speed sensor

[Ryan E.]

got an 01 F-350 SD w an auto tranny and it wont shift, so i take it to the ford shop, they get a code of 0719 or 0717, not quite sure so they order a new speed shift sensor and nothing..... so they have 2 call a hotline? of some sort. they basically tell me that its not getting power to sensor and that its internal... you feedback will be greatly appreciated, also anyone tell me what kind of tranny that my truck might have in it.
Thanks a Ton
Ryan

[FordNutz]

Ryan,

it would be internal as those type sensors generate their own power. As the coast clutch drum spins, the lugs pass through the sensors magnetic field and generate a small amount of power that the computer reads. The power output varies with rotational speeds. I could just be the 3-4 shift valve is stuck. When 4th gear is engaged, the coast drum doesn't turn.

[ipz2222]

It should be the rear speed sensor on the trans.