Toyota Surf 1KZ TE intercooler turbo engine.
Engine is strong.
Its giving high RPM than normal.
Top gear is not shifting at normal rpm.
Previous it gives 100km/h @ 1800 rpm.
Now it giving. 100km/h @ 2300/2400 rpm
Gear Mechanic is saying there is no issue with gear,
All gear is shifting(over drive)..no gear is faulty.
Issue is with any sensor, disel pump,nozzels,turbo booster.
But all parts are working perfect and checked by engine mechanic too..
No check light of engine and O/D is indicating.
Scanner also shows no issue.
Engine is in full power pick up is like patrol jeep.
Auto transmission is working 600/700 rpm more than normal
Pics are attachd.
Kindly suggest whats the reason
1st pic is before fault.
Last pic is if stable speed and with soft pedal.