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Re: Water in your floorboard
If you look behind the right front tire just in front of the fire wall you sould see the drain about 1/4 to 1/2 way up but if your drain works fine and you still get water in the floor your heatercore has sprong a leak and will need to be replaced
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Your drain hose is clogged. If you park under trees, debris can get in there. Once the hose is clogged, the water has to go somewhere, so it goes onto the passenger-side floorboard because that's where the evaporator is (under/behind the glove box).
Is it coolant or water? If its coolant could be leaking heater core. If it is water chances are its coming out of the heater box because the drain for the water that pours on the cowl under the wipers is clogged and it is pooling up and going into your cabin filter or fresh air intake for the cabin. Take off the wipers and cowl, clean.
The drain hose that allows moisture to exit the HVAC system is clooged with debri and prevents the water from exiting the HVAC area. Open the hood and you will see a rubber hose that has an opening on the end. Use compressed are to blow the clogged area free and allow water to exit.
The drain for your A/C may be clogged causing the water to accumulate. You should be able to locate the drain from under the vehicle on the pasenger side, perhaps there is an accumulation of debri such as leaves for example. Also, sunroof drain may also be blocked. I can say I have seen this problem before, and its a good place to start. Good luck
probably leaking heater core. you may have low coolant level now. the only place water comes in the cabin is for the heater, that has got to be it. the heater core can be bypassed (like my car's is) by simply cutting the hose that leads into the car and leave about a foot, make a big U out of it and plug the other side of the hose into the coolant passage that returns from the heater core and leads into the intake manifold. pretty easy you will need a knife, hose clamps, and common sense. the third one is a little harder to come by! :)
If it is antifreeze and water mix (you can tell by the smell) ten it is a bad heater core. If it is plain water, The drain for your air conditioner is likely clogged. There is a rubber hose that runs ou of the bottom of the firewall in the engine compartment. Try to push a long pipe cleaner into this tube. Most likely you will get some water coming out immediately i it is clogged. Let me know if this helps :)