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Discussion Starter #1
Last year my heater core took a dump so I disconnected the hose under the hood and bypassed the heater core.
A couple of weeks ago my radiator low fluid light came on, so I added coolant. I was surprised because I just had the water pump changed last year (full tune up). I haven't had any issues until then. She doesn't overheat.
Last night I noticed the carpet under the glove box section was very damp/wet (as if a heater core was bad and leaking)
It's been humid out here in California and I've been running the AC a lot. I'll start researching but maybe someone can point me in the right direction. :(
 

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From your description of using the A/C recently, it sounds like the 90' elbow may have come off the outlet on the firewall that directs the sweat from the evaporator core down and away from the firewall.

If this is missing, it's been known to let the water inside the cabin, and cause a wet carpet issue.

Does the carpet area have any odor to it?

I think I have a photo on my online bucket account, let me see what I can find so you can clearly understand what I'm writing.
 

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Check the drain hose on the A/C blower housing you will find it located on the passenger side in the engine compartment . Make sure it is clear and you can also flush out the housing there using compressed air. If it is very humid the A/C coils may have frozen and temporarily blocked the vent causing the condensation to back up in the cab. You can dry the carpet out with a coin op wet or dry vac at a car wash. Good luck.
 

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Here's a closeup of the bottom half of the cover for the evaporator core with the outlet that sticks thru the firewall:



Here's a picture of the elbow that I inserted and RTVd a piece of tubing approximately 2' long that is tied to the frame, that directs the water from running down the firewall. The tubing inside is cut @ a 45' angle so there is no obstructing the water coming out of the drain tube from the lower cover:



Let us know how you make out.
 

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As others have mentioned, this is a common problem on our cars. The little Elbow usually falls off and just search "wet Carpet" and see all the hits you find here. I believe the QaloSS Handbook also touches on this issue. You may still be able to source the standard elbow from the Dealer or online and use a "little" RTV to hold it on there. Careful not to block the opening with RTV though. :D

However, if you want to do something a little different and keep all that condensation from dripping on the car, just use a long length of hose with a 90* elbow in it. I had an old 9C1 Heater Hose that faded really bad and was going to trash it....this is why I never throw stuff away. ;) Instead I just used it on the Firewall fitting and ran it down below the frame. You will see it pictured in the last post of this thread to give you an idea of what I'm referring to.

http://www.impalassforum.com/vBulletin/showthread.php?t=1253137&highlight=wet+carpet
 

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A piece of 5/8 i.d. clear tubing and a small worm clamp will work fine. Take a zip tie and direct it under the car and cut it at the proper length. It's a permanent fix that works better than replacing the original elbow. Replace you heater core while you are at it. It's not like it costs a fortune or is a big job.
 

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Did yous get rain down there? If it's rain water, search threads on the cowl leaks and how to fix them. I had that problem and fixed it.
 

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As others have mentioned, this is a common problem on our cars. The little Elbow usually falls off and just search "wet Carpet" and see all the hits you find here. I believe the QaloSS Handbook also touches on this issue. You may still be able to source the standard elbow from the Dealer or online and use a "little" RTV to hold it on there. Careful not to block the opening with RTV though. :D

However, if you want to do something a little different and keep all that condensation from dripping on the car, just use a long length of hose with a 90* elbow in it. I had an old 9C1 Heater Hose that faded really bad and was going to trash it....this is why I never throw stuff away. ;) Instead I just used it on the Firewall fitting and ran it down below the frame. You will see it pictured in the last post of this thread to give you an idea of what I'm referring to.

http://www.impalassforum.com/vBulletin/showthread.php?t=1253137&highlight=wet+carpet
I'm going to try the curved 9C1 hose. That's a great idea! I can see where it can help too. All of the B Bodies I've had have had this issue to one extent or another, especially when driven aggressively.
 

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I'm going to try the curved 9C1 hose. That's a great idea! I can see where it can help too. All of the B Bodies I've had have had this issue to one extent or another, especially when driven aggressively.
It does a good job of diverting the water to the ground. The FW port in my opinion is not the best thought out location to have it drain. You don't need to cut up a 9c1 heater hose, that's just what I had on hand and it was a weird color.

Any 5/8" inch hose with a 90* bend will work and just cut the 1 end short and leave the other side long. A length of some Black Heater hose would be a little more stealthy. Whatever you choose, it is important to get a clamp on there so you don't loose it.
 

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I'm going to try the curved 9C1 hose. That's a great idea! I can see where it can help too. All of the B Bodies I've had have had this issue to one extent or another, especially when driven aggressively.
Like 4DoorSS wrote, it doesn't need to be a 9C1 hose, and will do the trick.

Does your ride still have the factory 90' elbow @ the firewall, or has it disappeared completely?
 

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If the elbow fix does not work, check the seal along the windshield at the cowl.
 

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Discussion Starter #13
Last year my heater core took a dump so I disconnected the hose under the hood and bypassed the heater core.
A couple of weeks ago my radiator low fluid light came on, so I added coolant. I was surprised because I just had the water pump changed last year (full tune up). I haven't had any issues until then. She doesn't overheat.
Last night I noticed the carpet under the glove box section was very damp/wet (as if a heater core was bad and leaking)
It's been humid out here in California and I've been running the AC a lot. I'll start researching but maybe someone can point me in the right direction. :(
Quick follow up: So, after this post, my heater hose connector T disintegrated into many small pieces. I replaced it and flushed the coolant while I was at it. I haven't had an issue with water under the glove box in the compartment since.
 
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