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water leak

 
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dan073eb
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2004 Chevrolet Impala


PostPosted: Fri Jun 13, 2014 6:41 pm    Post subject:  water leak Reply with quote

so today my buddy noticed water leaking on the passenger side floor. it looks like it was coming out of whatever the unit is under the dashboard with a fan. i'm not 100% sure it's coming from that though because i also noticed a gap between the plastic and the windshield on that side of the car as well when i started investigating. i have already sealed that. is there a reason why that blower/motor would be leaking though? thanks.
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2008BlueImpalaLTZ
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PostPosted: Sat Jun 14, 2014 7:52 pm    Post subject:  Re: water leak Reply with quote

dan073eb wrote:
so today my buddy noticed water leaking on the passenger side floor. it looks like it was coming out of whatever the unit is under the dashboard with a fan. i'm not 100% sure it's coming from that though because i also noticed a gap between the plastic and the windshield on that side of the car as well when i started investigating. i have already sealed that. is there a reason why that blower/motor would be leaking though? thanks.


Remove the passenger side air inlet grill (plastic - held to cowl under windshield wiper arm with black plastic fasteners). Your year Impala had a black rubber strip (about 12 inches long) pushed onto a metal lip, which diverts water to the passenger side inner fender to drain. It is common for the rubber piece to fall off, thus allowing water to enter the passenger compartment via the HVAC fan opening.

Clean the lip, reattach the rubber strip with silicone and allow it to dry. This will divert the water to the right fender again.

Later years had an a molded black plastic water diverter "trough" that replaced the weather strip.

Good luck - post any questions you may have.
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lostwrench
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PostPosted: Sat Jun 14, 2014 8:09 pm    Post subject:  Easy Fix Reply with quote

Yes, it is a common problem with the 04s. Happened to mine. Easy fix as described above.
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dan073eb
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PostPosted: Sat Jun 14, 2014 11:16 pm    Post subject:   Reply with quote

So I've examined the rubber strip. Still pretty well attached to the metal. Not completely fallen off like I've seen happen to some ppls. Water has been coming into my car on the passenger floor for 2 days now, when I drive the car and turn and accelerate. Last time it rained was like Thursday night I believe. Could that much water be inside the fan? The water deflector is in the mail. Hope it's not something else...
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Irish_alley
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1986 GMC Sierra
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PostPosted: Sun Jun 15, 2014 12:35 am    Post subject:   Reply with quote

a stupid question but is it raining?

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PushrodPower
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PostPosted: Sun Jun 15, 2014 1:12 am    Post subject:   Reply with quote

The AC condensation drain hose may be clogged if the deflector doesn't work. Super easy fix. Just shoot compressed air in the drain hose located underneath the car. A bunch of water will pour out when you do this so be prepared and stay out of the way.

I doubt it's this, but just in case.

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dan073eb
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PostPosted: Sun Jun 15, 2014 10:01 am    Post subject:   Reply with quote

Irish_alley wrote:
a stupid question but is it raining?
Like I said Thursday night was the last time.

PushrodPower wrote:
The AC condensation drain hose may be clogged if the deflector doesn't work. Super easy fix. Just shoot compressed air in the drain hose located underneath the car. A bunch of water will pour out when you do this so be prepared and stay out of the way.

I doubt it's this, but just in case.
Can you be a little more specific about where it is? Driver/passenger side? What's it look like, plastic? Metal? Thanks.
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2008BlueImpalaLTZ
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PostPosted: Sun Jun 15, 2014 10:29 am    Post subject:   Reply with quote

dan073eb wrote:
Irish_alley wrote:
a stupid question but is it raining?
Like I said Thursday night was the last time.

PushrodPower wrote:
The AC condensation drain hose may be clogged if the deflector doesn't work. Super easy fix. Just shoot compressed air in the drain hose located underneath the car. A bunch of water will pour out when you do this so be prepared and stay out of the way.

I doubt it's this, but just in case.
Can you be a little more specific about where it is? Driver/passenger side? What's it look like, plastic? Metal? Thanks.


The a/c condensation drain hose is a 90 degree rubber elbow about the size of your small finger.

It is attached to a hard plastic nipple the protrudes from the firewall, closer to the passenger side. It is about 12 inches below the cowl.

In good light (sunshine) and with a cool engine, look for it. It may be a tight fit, but use your hand to wiggle it off - but don't brake the hard plastic nipple. Usually the drain clogs at the end where it has a molded end. Clean it out and reinstall it. Excess water may drain when you remove the rubber elbow. It is often very difficult to shoot compressed air into it, unless you access it from underneath.

EDIT: If the rubber elbow is not clogged, but you suspect the clog is in the plastic nipple - use the non-clasp end of a nylon zip-tie to clean out the clog.

Good luck.
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dan073eb
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PostPosted: Wed Nov 26, 2014 8:46 pm    Post subject:   Reply with quote

Just to chime back in since I see other ppl are dealing with this issue too- I believe my issue was the drains at the bottom of the windshield were clogged with debris and needed to be cleaned out. I did end up buying and installing the deflector and changing out the air filter while I was in there as well. All is good though now, water drains out as it should instead of sloshing around and leaking in through the bottom of the dash.
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