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need advice water leaking on the right passenger side

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Old 10-10-2011, 11:19 PM   #1
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need advice water leaking on the right passenger side

Hi all
When it is rained or when I sprayed water on the front windshield, I got water dripping down on the right passenger side. I took out the glove compartment and noticed it is wet behind blower fan. So I opened the hood and remove the cowl panel (I think that is what is called) where the windshield arms are attached to. There is a big vent in the middle. I think that is where it leaks. I'm thinking pouring copious water down vent to test it but hesitate to do it because I'm not sure what it does.
Someone told me that the cowl panel is not the problem. Some articles on here showed that air conditioner condensation on that side could cause the problem. Could it be water found its way to the air conditioner condensation pipe when it rains? if so from where?
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Old 10-11-2011, 01:29 PM   #2
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Your second paragraph is very likely the cause, however what you're saying there is wrong.

Inside the big square-ish box to the left of the blower (and filters, if you have it) is the AC condenser. This removes moisture from the air and it condenses, then falls into the drip pan (the bottom of the black box I just described) then into a rubber hose through the firewall and then down onto the ground. That's why when you see a car idling during the summer at a drive thru window or something, there's water dripping out near the front passenger tire.

Sometimes that hose either gets clogged or comes un-hooked. The hose comes out the back of the box. Feel around back there and see if you feel either a plastic hose end or a rubbe rhose flopping around. If you find that, you know what to do. Just reconnect it, and then work on getting as much moisture out of the car as you can before mold develops.

If everything feels intact, the next thing you should do is jack up the car and try to locate the rubber drip hose (should be just a hose coming straight out of the firewall aimed at the ground. I've never actually seen the hose on an I30/Maxima but all cars I've worked on are more or less the same. When you find the hose, squeeze and massage it and see if you can get whatever is clogged in there to come out. Maybe even carefully poke into the hose with some wire, but be advised that water will come pouring out, and it will be nasty.

If the hose was clogged, I would recommend flushing out the condensation pan and getting out whatever crud was clogging the hose since you just pushed it back into the box. You should be able to run a thin hose through the little compartment where the air filters usually are. Clean the thing out real nice too, there are probably a lot of leaves and things in there contributing to the problem. Might not be a horrible time to install some filters once everything is dry.

Let us know what you find.
2001 i30 - Black & Tan
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Old 10-11-2011, 09:00 PM   #3
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^^^ well stated!
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Old 10-12-2011, 07:34 AM   #4
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Mine leaks like that when I go through the car wash with my A/C on full blast. Water pours in through the floor board and when I cut my A/C off the leaking quits.
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