Stalls out when accelerator is depressed

[Hinotow]

Hino 258 plays out around 63 mph bogs down during shifting and upshifts regularly without cause Please help

 

[Hino123]

Year? codes? what transmission? Check transmission light on? check engine light (yes/no)? recent repairs? These are the kinds of things that you should include when asking a question. Like anything else in life, you get out of it what you put into it. With more details I may be able to help further.