Thanks for your comments guys!
Ok here's the thing.
When I accelerate from a full stop it starts shifting early, @20MPH i'm already on 3rd gear and it makes it to be really slow (I feel is the 3rd gear since), is like when in a stick shift car, If you start on first and then you go to 3rd instead of 2nd it takes time to accelerate until you go faster.
I tried to do some adjustments on the vacuum modulator but it doesn't work, it just makes a liiitle bit difference but then it shifts harder.
Also I don't know if my kick down switch is ok.. I tried to press it with my hand while the car was turned off and I can push it and then it pops back , I don't know if by pressing the accelerator it activates it (I dont remember if I checked that the last time) but anyways it doesnt works or makes any effect while driving..
I tried to adjust the linkage over the valve cover but I don't feel it makes any effect.
While driving at 65MPH my revolutions are 3500 but I think it needs like a 4th speed..
I hope you guys can guide me to make those adjustments. Tomorrow morning I will take some pictures and post them here. Also the pictures from the part which is just moving around under the intake manifold.
Here are some of my car..
Thanks.