I have a 2008 Mazda3 2.0L automatic transmission.
so I just bought the car and individual told me it had a bad transmission, I replaced transmission and I didn’t move, replaced harness and still didn’t move so I finally replaced the computer had it programmed to the vehicle and keys and it still doesn’t move. Shifter moves but when it’s on drive it jumps from 1 all the way to 3 or even 4 and doesn’t move.I am honestly losing my mind on this, any suggestions