Unplug then is not any part of TC Clutch.
3 speed... Check TV adjustment, otherwise likely internal to the trans.
(4 speed... check TV and vacuum modulator.)
Governor would hose shifting. TV cable w/ iffy adjustment will cause Hydraulic pressure problems.
Dr. Ian Malcolm: Yeah, but your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should.
The Ogre's Fiero Cave (It's also at the top and bottom of every forum page...)