what do I do to make the air conditioner work when on high on 1996 Chevrolet Blazer

my air conditioner control button shuts completely off when on high. I replaced the resistor and the control gauge and now it works when ever it wants to and when I step on the gas it don't blow thru the vents and when I let off the gas I hear a click under the hood and then it blows full force. Also the air don't circulate thru out the jeep so the back is not getting cool. What should I do?

Asked by for the 1996 Chevrolet Blazer