Wira (A) 4g15 gearbox problem?

[BuJiDaO]

Hey all sifus out there, my wira is currently having this problem that only shows when the engine is cold (early in the morning). When I start driving, the car like no power at all, and when it is in the 2nd gear it can't change to the 3rd gear, it will only raft but will go slower. Only when the I drive for sometime when the engine is heat up only it can drive smoothly. Any suggestions? D: I just overhauled my gearbox, at the start everything was okay, after 2 weeks of driving, the old problem came back.

 

[DanzEterna]

not sure if wira have a valve body, that need to be serviced.

 

[BuJiDaO]

yeah got, I just service that and got my car today, and now my car very shaky, but I dont know does it still have the same problem, need wait till morning try only can know.