407 2.0 petrol automatic transmission malfunction

sa friends bought a 100 thousand peugeot 407 2.0 petrol al4 transmission, immediately after receiving the vehicle gave prnd failure. it gets better when you stop and run. I took it to the automatic gearbox master and changed the oil and 2 solenoids. however, when the gear shifts, the vehicle gives empty gas when it gets hot, especially when it is 2 gears when it heats up on the light ramp, it gives prnd error if I continue to shake at the same speed. the master I took, says he will be held. one can not perform full performance in the first shift to 2 gears. What do you suggest?

If the gearbox shifts down when it heats up, if there is a backoff, the gearbox must be opened, but the gearbox must have been used very badly to give this fault, or the km is not original. There are linings between the oil filter and the gears inside the gearbox, besides, it loses performance over time in the turbocharger, the system will return to its healthy state with a medium revision since it changes in the valves in the gear system.