Hello guys

I have one wj v8
my first gasoline jeep

she is good condition but little problem with engine

he sound good and good acceleration
but to 3500-4000 I can t up
In parking position and N or D
when the car want to accelerate, she is blocked to 3500-4000 not upper

i have change many parts

but I don’t know what is this ….

i am sad not to find the fault

does anyone have any idea about the cause.

fuel pump and filter. spark plug and ignition coil, throttle sensor and idle speed regulator

I removed the catalytic converter and disconnected the lambda sensors. only the map sensor remains, I saw that on the obd the throttle sensor did not give full opening 12% -76% max

thank you in advance for your help