Because its summer, and I already saw 4 posts on other boards;
Find the flap, pull back on "U" shaped flap. ON THE FIRE WALL!
Pop up rubber flapper underneath,
If water comes out, great you just fixed it. If not, take a pipe cleaner and run it in there to get the junk out.
Some of us just take the rubber flap out.
This will fix the water leak on the passenger side floor.
Modified by Dan J Reed at 10:23 PM 9-22-2007