I saw a post on this a few months ago, but can't find it in the archives: During the summer, hot air rushes in by my feet. In the winter, it is cold air. What is not functioning properly? ALSO!!: Without the AC on, just the vents, I hear something (like a flap of some sort) flapping at speeds over 60mph. Are the two above items related? And, (one more thing, while I'm at it) when I turn on the AC, I hear a fan squealing for about the first 15 seconds it is on...seems predominately on the passenger side. Is the a belt? A bearing in the fan? It is hard to figure out where exactly it is coming from, since the noise resonates through the ductwork to the passenger side AC! Nick 3092