I have a 2002 4Runner. I have noticed that when I turn the temp know all the way to the coolest position, the fresh air blowing in is no where near as cool as the outside air. I've noticed I can get heated air by just barely moving the know towards the "red" heat zone. Is there some way to make sure when I turn the knob to the coolest setting, I can be assured I am getting the coolest air coming into the interior? Is there some wire or not I could tighten or loosen?