wont shift into 4 or 5

Just Got a 1992 Acura Vigor A/T , it shifts 1-3 at 3000rpm, but wont shift into 4 or 5, not sure on this car, never owned one before, but its running at 3200-3500 rpms @ 60MPH, What could be the problem?'

i just got this car for 600$ and fixed the vacuum lines that were causing map codes... but it still has a knock code.... my biggest concern is the transmission, it dont shift until 3000rpm and wont go into overdrive , holds 3200-3500 rpm @ 60mph...