well its still coldish up here. i pulled back the Mat on the passenger side. its dry there.
i also notice the drain tube looks very dry. like dusty. i tried to unclog it with a small wire. that didn't do anything.
ill try some compressed air this afternoon. Maybe the line is frozen if there is water in there. its still minus 3c or so here.
if i run the defrost, how long before water should come out the tube if its not blocked? 10 mins or so?
Are you removing the drain line from the plenum under the dash? It exits the passenger compartment through the passenger floor and winds up in the undercarriage.(hope that makes sense!)
If removing it from the under dash plenum, just blow through the rubber tube to make sure it's clear and reconnect it. If you can locate the end under the car, I put a slightly smaller hose inside of it so you can blow through it and into the plenum. I do this as a routine item every year or so because I don't want to go through soaked carpets again!
I would agree that you should thoroughly warm up the car beforehand. In the summer, you will get water coming out in a minute or so, but in cold weather, I'm not sure how long it would take.
If you can blow through the hose and feel it's clear, then you'll have to take JBs advice and look at the possibility of a windshield leak. If you have a sunroof, that's another place to look.
At any rate, if the carpet is really soaked, then you'll have to remove the carpet and the insulation bats and dry them out thoroughly before replacing them. Otherwise mold!
Good luck.
