Hello all -
I was driving back home for about 5 hours the other day after the holidays. It was raining out for mostly the whole time, and I noticed that the passenger side floorboards had become soaked with water about 3 hours into the trip. (It isn't the heater coil, so *phew*). It was soaked both below and on the hard plastic winter mats (with the lip) that I have in my car, so it certainly didn't come from just below. Upon closer inspection, it appears that water was dripping from the front of the car below the dash about 5 inches to the right of the heater vents down there. There are black streaks down the carpet.

Any thoughts as to what this could be, and what I should look for? I just installed a cabin air filter two weeks ago but made sure I put everything back the right way... Also, I checked the drain vents from the engine compartment... I didn't notice anything blocked. My passenger floorboard is still kinda damp, and considering the weather we have here in the 'cuse, it's going to be like that until Spring. Consequently, something like this happened about this time last year (although with a rear window seal) and I had to wait for warm weather to bake the car before the water was really gone.

Thanks for any suggestions.