Hi, I have an 2001 Rx300 AWD and the transmission is very rough shifting from 1st gear to 2nd, but it has no problem reaching 60mph
my Indy has replaced a new transmission , but the problem is still the same.
He has checked the ECU , no problem, and no error codes.
He also cleaned the speed sensor, knock sensor, neutral safety switch as suggested on the forum without success.
does anyone know where else to check?