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Re: Water in vehicle.
Do you get the water only when you are driving in wet conditions or is your air conditioning condensation leaking into the car instead of draining outside ( does the vehicle even have air conditioning ) if it is from outside, most likely it is splashing up at the wheel well or firewall and finding it's way in.
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I remember VW used to have their heater core under the back seats. When the core goes bad, all the water in your radiator leaks under the back seat floor mats. I'm not sure if this is the case, but does your heater work? Do you smell a maple-like odor under the seats? Do you keep filling the radiator a lot? Real puzzle.
Or, it may be coming from under the seats. Water from rainy days may be coming in from under the body. Check if you can see daylight under the seats: Place a high beam light source under the car and see if you can see the light from the inside. It is really a mystery if this isn't the cause.
Possible that the drain of the AC from the drain hose under the dash has leaked or the hose has come off that had caused this issue.
Look on the underside of the evaporator tank where the condensation of the water from the cooling pipes collects. This has to drain by a hose to the bottom of the floor of the car. This must have come or displaced.
Make sure that the drain also is not choked or clogged.
You could have a windshield that is leaking water. Often this water will trickle down from the bottom/inside of the glass and then down the firewall, under the carpet or floor mat, and to the floor. The way I usually hunt for these is to remove the floor mat or carpet then get a flashlight and lay down in the cab so you can see under the dash area while someone sprays water on the vehicle with a garden hose. Often the leak will show up as a trickle that you can then backtrack to it's source. Another spot to look for is at the cowl in front of the windshield where air for the heater and a/c is pulled into the passenger compartment. The water drain holes in this area can plug up and allow water to overflow into the passenger compartment. Good luck, hope this helps!
Is the water only in footwell behind driver seat? If yes, then have you checked the weather stripping around rear door (assuming that it is 4 doors)? My brother had the same problem, and behold it was the stripping around the door. If you find that is the cause, standard household weather stripping added to door frame will work well.
I have water coming from under the dashboard as well when the A/c is running. My fathernlaw is a mechanic and he thinks the drain for thea/c is plugged underneath. He says you must have the vehicle on the hoist and get it from underneath. I am having other issues with my Dodge caravan, and is been in the shop, so I have not had a chance to get under and look at it and try to fix it
This happened to me. Problem is that the wiring and transercase ECM under the floor mats are not weather sealed. To fix the 4X4 ECM youll need to take up all the flooring and sound proffing. They hold a lot of water and never real dry out. Next to replace the ECM its easyest to take out the drivers seat. Four blots hold it to the floor. The black box under the seat (under the floor mates) is the ECM for the transfer case. Replace that and get the conections in the wireing dry and you should be good.
Is it antifreeeze from heater core or heater core hose leak? Is the leak pure water, or maybe something else?
Put it in the garage again overnight with an old white towel in the drivers foot well, best if you can find a way to stretch it from drivers seat forwar to firewall and keep it off of floor mat. Check it before you go to bed, then in the morning if no leak found yet. see if the color/location of the spot helps you identify the source. I think the heater core is under the dash center. Anti freeze is green/yellow or orange.