Thank you very much for your help!
The thing is that water comes from the AC drain without having the AC running!
I do not have water inside of the car but when I start the car water comes out through AC drain without running the AC.
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You probably have two different issues here. The water on the floor is usually caused by a drain tube being stopped up. The tube is supposed to let the water drain out of the car and onto the ground. It should be on the bottom of the firewall or below the floor. You would need to have the computer scanned for trouble codes to find out why the check engine light is coming on.
There is a drain under the vehicle under where the ac lines go into the vehicle cab',look directly below the ac lines,it is hard to find but it is there ,use compressed air ,like a air compressor or air tank,with a blow gun and blow the drain out,if it unclogs the drain,it will pour out like a water fall,if this was at all helpful,please rate thank you.
there is a drain for the condensation. it outside on the firewall on the pass side, probably pretty low. its got a little rubber hose looking thing stickin out shove some wire up there and clean it out. it get plugged up and it fills the hvac box up with water and the cox is not water tite
Look under the hood,and find the two ac lines that go into the firewall to the inside of the car,directly below the ac lines ,you will find the drain,under the car,hard to find,but use air to blow the drain out,and when it is cleared out,the water will come out like a water fall,so do not get wet.If this was at all helpful,please rate,thank you.
Look under the hood where the ac lines go into the firewall,and look directly below it,it may have a elbow boot like thing on it,just pull it off and use compressed air to blow the drain out,it will come out like a water fall when it is unstopped,if this was helpful,please rate,thank you.
My 2001 passat did the same thing. my leak was coming from the door panel. Open your door and use a water hose to simulate rain water running against your window. Water should run into door and drain out of several drain holes at the very bottom of your door. Check for water leaking from the bottom of your plastic door panel. The water runs down into the door and leaks through your inner door panel seal causing water to leak inside from the bottom of your door panel and run into the floorboard instead of draining out the water hole in the bottom of your door.
u most likely have some condensation building up in evap box ,,need to clean it out before it gets worse,,,if u are running it on low blower ,it is going to put out mist sometimes (if the air is really cold) because of the expansion valve pulling down the tempurature
there is only one thing that leaks water there, that is the AC condensation drain, water forms as part of the AC cooling the evaporator core, this water must be drained away or it will flood onto passenger area, so there is a drain on the passenger side at bottom of firewall, will leak allot of water depending on how humid the air is.
the a/c drain tube is ONLY to drain a/c condensate coming of the evaporator in your a/c system. Has nothing to do with rain, but everything to do with high humidity. If you put you a/c in "ecirc" mode when using the a/c, you cut down on condensate draining by about 70%.
WItht he a/c running ona humid day, you should see condensate draining out of the drain tube on the passenger side under the car body.
The rain water is another story. You have an air intake we call a "Rainhat" that is under the leaf screen at the base of the windshield towards the passenger side. If you have rain water dripping or running into the rainhat, it will run into your heater plenum (the big, black plastic thing under the instrument panel).
Remove the leaf screen and look for leaves or other debris clogging the area around the rainhat. look to see if water is running along the metal trim above the rainhat and dripping into the rainaht opening.
I once fabricated a cover over the rainhat using the bottom of a plastic anitfreeze bottle. I made an opening at the rear so it could still draw air in without restriction. It solved the water running along the base of the leaf screen and drooping right inot the rainhat. It rusted the blower motor and ruined it.