well, if it's clear, it's probably just water.. so that could be clogged drainage tube (easy to check.. pull out tube from underneath car, check for clog, reinstall).. if it's green (i.e. anti-freeze), it's probably your heater core.. :/


more info:


the tube you want to check is #15 in that diagram. it passes right through the firewall... you can see it go through right below the dash on the passenger side. just follow that to the outside to see where it goes.

let us know what you find..