1995 Audi Quattro

Air Conditioning problem
1995 Audi Quattro 6 cyl All Wheel Drive Automatic 170, 00 miles

I am using the AC in my car all of the time and I have noticed that there appears to be a pool of water that has developed somewhere behind the vents. I can hear the water shift when I turn the corner and there is a musty smell of water when I start the AC. I am sure that this needs to be drained. I don't know how to do it and how to prevent it from happening.
July 26, 2009.

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