Does anyone know what controls the shifts and torque converter lockup when turning OD back on? My transmission does not slip or shift erratically at all when I leave the OD button turned on. If I turn OD off and accelerate from a stop the transmission up-shifts nicely. When I turn OD back on at speeds at or above where it would normally shift into 4th gear, the transmission either goes neutral or slips badly for a few seconds, then engages again in what seems like a lower gear, then up-shifts again and acts normally until I lock out OD again. It only happens on immediate up-shifts when turning OD back on. It's been doing this for several years now so I don't think it's a sign of impending doom. I don't lock out OD very often but when I do I know to coast for a few seconds when turning it back on. I'm going to pull the pan to adjust the bands soon and want to know if there is something to check or adjust while the pan is off. I can wire up a manual lockup switch or lockup signal indicator light before taking it apart if it will help troubleshooting.
- posted
16 years ago