¿what problem has if doesn't change speeds?

I'd change the a/t gear box twice and the problem keeps so i changeback to yhe original i hve changed all sensors and check the wire.

At the begining, the over drive stoped work, but now only stay at 1st and when i get the RPM (around 3700) to get 2nd just make some noice like someting its going to break but doest make the change.

the manual changes works fine but only have 1st and 2nd.

if somebody knows other kind of test or which part could have the promeblem i'll be very grateful.

thnks.