Howdy people , 75 Mav 6 cyl 250 Tranny , not sure .. Definatley original .. Yeasterday everything ran well , today started fine , goes into drive , park revervse , low 1 , low 2 .. Wont shift while driving ?? Stays in 1st , no shift ?? Being new to this , anything easy to check before machanic takes me to the cleaners ?? Tranny fluid looks clean , but overfull .. Never added any or changed fluid in the year I have drivn it as there where never any problems till today .. Also , I have no manual so please describe trouble shooting in laymans terms , hoping this my be an easy fix .. Thanks very kindly ..
Thanks everyone , I found it , crackd vaccum line at modulator , runs fine again ... Much appreciated !! Cheers !!