Originally Posted by drmisherre
Yesterday I was going down the road doing 55mph and my trans(torqshift) dropped into 4th and wouldn't down shift. I had to use a jumper wire to start it even. We're thinking a stuck solenoid or something but not sure. Anyone help shine light on the subject?
Technically speaking, if it shifted out of overdrive, it's in 5th gear. The TorqShift is actually a 6 six speed transmission that only uses 5. More confusing is that it shifts like a semi:
But because 2ndOD (or 4th gear) is 1.09, it skips to 3rd (or 5th gear), 1:1. Unless is like below zero, then it uses 4th, but shifts to 6th. This is why the SCT programmers ask for 3-5 and 5-6 shift pressure preference.
Depending on pedal pressure, if it only down shifted once, it could have just unlocked the converter because my converter is usually locked by the time I hit 55 and it feels like a gear shift.
Speculation aside, you should be able to manually shift between 1st and 3rd on the column, if not, you have solenoid and/or transmission issues. I bought a rebuilt valve body off eBay for $250 that included all 7 solenoids and wiring harness. Ultimately my clutches were shot, but this may be a place for you to start.