It seems to be completely unrelated to changing settings on the climate control, but as far as I can tell the climate control doesn't function at all anyway. The stop lever seems to move as far as it's supposed to, the only sticky part in the throttle linkage is the gas pedal, it is a new redesigned one from the dealer so it sticks enough the car idles a little high unless you pull it back up with your foot, but I'm not comfortable using an original one after the one on the car when I got it snapped off and jammed the throttle wide open, it just seems too dangerous to me. I dont think that is effecting the stop lever moving though.