Quote Originally Posted by kurthaver View Post
The only settings where the AC does not operate in manual mode is when full dash vents or the partial floor/dash vent mix are selected. As soon as I turn the knob to full floor/dash vent mix or full floor vent, the AC kicks on.
Ok, I think I may still miss the mark. I see that the only settings it does NOT operate in manual mode are those certain ones...

You do have auto climate control, yes? Wet carpet/interior is a a cause for humidity and therefore can kick in the compressor on a vehicle that senses the climate. (Toyota Prius does this). So, I cannot say for certain but it is possible that this is what is happening. However, if your car has an 'Auto' button and you shut that off, it will not run the compressor.
I wish they would let me put a strikethrough on this but I cant. I wanted to keep it up for the info, but after reading I dont think it has to do with the problem youre having.

Is your A/C run using the computer? I wonder if something may be wrong with it? I thought I had more of an idea but seeing as to how you say it runs in other settings on manual mode, that doesnt sound right. I couldnt see any way that could be possible without being a computer controlled system, and even that is pretty out of the ordinary. Or, maybe there is something I dont know. I have a 2005 GT, although I am unaware of the differences in the cars, I did not see anything on TSB's about a/c system performance so it must not be a known problem. I will see if maybe I cant find out more information sometime in the coming week.