I do not know if it is indeed the problem, but, it is a distinct possibility. Search the archives..once you've poured through them, you'll be able to go outside and see for yourself in a matter of minutes. Even at this very moment, and even though its dark where you are right now.
One other thing to check, (you can do this yourself too...even at night) is start the car, turn on the A/C, wait a good bit, and see if the auxiliary fan comes on. (you have to wait a few, it doesn't come on right away, only when the daft thing thinks it must)
Hope this helps out
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