My 2nd rebuild in 18K miles. 1st one was an Ebayer from Tampa I believe. Told me all heavy parts. Tore it up stock rebuild. Now local garage my nephew works as service writer. Picked it up handed over $4200 and got out and started it up. OD light flashing at idle. Once good and warm won't shift into 3rd without running up to 38 mph and backing off quickly on pedal. If I don't do this she will go to redline and not shift. Garage says engine not running correctly bad MAP and EBP. Took it back and I changed both. Guess what still won't shift. Anyone had these symptoms? One more thing when I first drove it home the flashing OD light I thought maybe low fluid. I checked it warmed up, level, and in park. Dry stick yup. I called to get back and drop it off for OD lite and low fluid. They called with estimate of MAP EBP and fluid $375. I said what about OD light they said engine trouble. ANY Advice will be welcome.