Hello. I am working on my girlfriends 96 Regal and find that the condensation from the AC seems to wind up inside the car. The last few days have been very humid, so as to amplify the problem. Does anyone know what causes this? Is something clogged? Seems like it would be an easy fix. Any ideas? Thanks.

The little drain pipe on the firewall is probably clogged. Its under the hood, on the firewall down near the heater core pipes.