PASSANGER SIDE CARPET FILLED WITH WATER. WATER LEAK UNDER DASHBOARD
MY NISSAN XTERRA IS LEAKING WATER UNDERNEITH THE DASH BOARD AND NOW ITS TRAVELING DOWN TO MY PASSANGER SIDE CARPET. MY NISSAN IS ONLY 5 MONTHS OLD AND I'M TOTALLY BLOWN AWAY THAT THIS IS HAPPENING. SOMEONE SAID THAT IT MIGHT BE MY AIR CONDITIONER EVAPORATOR THAT IS LEAKING. I'M TAKING IT DOWN TO THE DEALER THIS WEEKEND TO GET REPAIRED. I JUST WANTED TO LET YOU KNOW THAT THIS IS A PROBLEM THAT I'M HAVING WITH MY XTERRA...
Re: PASSANGER SIDE CARPET FILLED WITH WATER. WATER LEAK...
I've had this happen with several of my cars and what it inevitably turned out to be was a clog in the evaporator drainage hose. The moisture that condenses in your evaporator casing should drain out through a hose that leads out under your car but if the hose gets clogged that water backs up and ends up on the carpet inside your car. Sometimes its a bit of a hassle to get to but with a bit of work you can usually use a bit of wire or a pipe cleaner to clear it out. If you can crawl under your car, its also possible and sometimes easier to get at it from the there.
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the condenser is out side the car in front of the radiator. the unit inside the car is the evaporator and doesn't leak as it is gas filled.
the problem is that moisture is formed on the evaporator fins and this is collected in the bottom of the ac box and drained off out through a hose near the transmission or engine ( puddle of water on the road at lights). The drain hole in the ac box fills up with gunk and the water collected flows out under the carpet. Cleaning the hose and outlet will fix that problem Dash units are held in place by bolts next to the door openings ,across the top at the base of the windscreen and the steering column bolts. To get some idea of how they are fitted go to a wrecker and see how they are done.
The only fluids under the dash are coolant that circulates through the heater core, or if you have a manual transmission a failed clutch master cylinder can leak brake fluid under the dash right where clutch pedal is located. If the heater core is leaking, it usually shows up on the passenger side. If it is just plain water, you need to check how rain water could be getting in past the firewall and under the dash.
It could be leaking from the heater core, under the carpet an down the side of the car??? Definately a weird one, i would suggest a cooling system pressure test, this will help pinpoint the location easier.
If you know for sure it is not leaking in from the windshield molding, then the only other thing that would cause a leak in the passenger side carpet is a leaking heater core or hose.They can be a pain to find and get to but it is all contained up under the dash on the right side.You just need to tear it all out under the dash and then lay on the floor on the passenger side and look and run the engine until it is hot and then turn on the heater and change it from hot to cold and then watch for the leak.
Only 2 things this can be. The air conditioner drain is plugged, or the heater core is leaking. If the water smells loke antifreeze then the heater core is leaking and needs replaced, if no smell then the AC drain is plugged. You can acces this from und3er the vehichle, should be a small tube near the firewall to drain outside the cab, just runn a wire up in it and see if something comes out like moldy water!
It's possible that the seal around the windshield is leaking and the water is trickling in behind the dash area where it is very difficult to see. These leaks can be very difficult to pinpoint and often I've just had to eliminate every other possibility first before finally pulling the glass to find the exact source of the leak. It's a bit of a job but if you can't find the leak then try removing the carpet, insulating pad, and seats completely from the front, dry off the floor, then have someone sit inside with a bright flashlight looking for a leak while you run water over the doors, windows, windshield, and sunroof [if equipped] and you'll most likely find the culprit. It's also a good idea to get the carpet fully dried out so it doesn't get musty and smelly plus it will eventually cause the floor to rust if left wet. Good luck, hope you find your leak!
The drain is supposed to come out under the car, passenger side, ahead of the dashboard area. If yours is clogged, that's where you need to look once you're under the car. You should see a tube pointing forward or down, sticking through the firewall - that's it.
Check for Leak in your Heater Core... ie; Passanger Side floor board. up the carpet to the Firewall and behind the center Console. If this is a Slow leak the carpet might not show wet. Check the padding under the carpet.
Yes it is a heater core leak, here is how to change it.
Remove battery cables. you have to remove the upper dash pad on this paticular year model. with a 10 mm socket and a 1/2 inch extension remove the 5 retaining bolts. remove the blower assembly under the passenger side of dash. remove passenger side seat and center counsole. drain radiator. disconnect hoses from now exposed heater core. turn it 180 degrees and slide out. Replace in reverse order.