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Old 09-03-2000, 09:27 AM   #1
Scooby Specialist
Member#: 1209
Join Date: Apr 2000
Location: Wheaton, MD
Question help! Water from air conditioner?

Has anyone had this problem or does anyone have any insight?
I was running the A/C yesterday for a couple hourse in really really humid weather- we're talking disgustingly hot & sticky mid-atlantic stuff. Anyhow, my passenger noticed ice cold water dripping into the passenger side footwell. I figured it was condesnation from some A/C component. Before long, there was so much water I could hear it sloshing on hard left turns and when I accelerated it would "spill-out" from somewhere into the footwell.

I'm wondering if the extreme humidity just created so much condensate that it overflowed some drainage reservoir somewhere? Or is there something clogged? I know in home units the condensate has to drain freely. Anyhow, the carpet above the ECU is now soaked and there's standing water.

I know nothing about the A/C system and couldn't identify the components under the glovebox to save my life.

'97 GT, Rio "gumball" Red

[This message has been edited by gumball (edited September 03, 2000).]
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Old 09-03-2000, 10:49 AM   #2
Scooby Newbie
Member#: 1362
Join Date: Apr 2000
Location: San Francisco, CA
99 2.5 RS


I have had water drip in the driver side footwell after long air-conditioned runs. The shop told me it was condensation from the AC. Your problem sounds quite a bit worse than mine. I would have that looked at if you are getting enough to cause standing water! I only experienced a few drops. By the way, I drive a MY99 RS. Good luck.

[This message has been edited by AaronRS (edited September 03, 2000).]
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Old 09-03-2000, 11:23 AM   #3
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Member#: 1847
Join Date: Jul 2000
Chapter/Region: Tri-State
Location: brokenmotorsports.com
Team Broken: V6 GF


There should be a drain on the evaporator so the water can get out, sounds like its clogged, take the car back to the dealer, if its under warrenty, you should be able to get new carpet and floor mats, argu w/ them about mildew and all that good stuff.

hope that helps

Jay McDade
MY00 BRP RS coupe
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Old 09-03-2000, 09:32 PM   #4
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Member#: 386
Join Date: Oct 1999
Chapter/Region: SCIC
Location: Upstairs in the bedroom
1999 Impreza RS-S
Rally Blue & Supercharged


Every car that I have ever owned that had air conditioning also had a drain tube for the water that builds up inside the evaporator. The Japanese cars have a "drain" in the bottom of the black box that contains the evaporator. Either your hose came off, ot it is clogged.
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Old 09-04-2000, 01:17 AM   #5
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Member#: 1209
Join Date: Apr 2000
Location: Wheaton, MD

Thanks for the tips! Unfortunately its past warranty (57K). I did look under the dash and there's a black box of sorts and in the way back of the box by the firewall/footwell there's a tube (drainage?) that goes into a hole, right where the top of the ECU is. Talk about a silly place to allow water to flow. I'll see if I can disassemble. The seams of the black box are foam and are soaking wet.
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Old 09-05-2000, 01:38 AM   #6
Scooby Newbie
Member#: 1721
Join Date: Jun 2000
Location: Sandy Eggo, CA

It sounds like your drain tube is clogged. Chances are it's blocked by rotting leaves that blew in. Open the hood and look for the AC lines going thru the firewall. Look about 6 inches below them for a short black tube. Try to clear it out.

Another cause for AC leakage inside is when the optional vent air filter is put in wrong. The filter has a tab on the top that has to fit in a slot; otherwise the cover doesn't seat all the way and water drips onto the carpet.
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Old 09-05-2000, 01:48 AM   #7
Scooby Specialist
Member#: 1209
Join Date: Apr 2000
Location: Wheaton, MD

Thanks for the help everyone!

I found the drain tube and disconnected it, more water drained out of the black box into the footwell

I then pulled the drain tube off from the engine compartment side and sure enough it was clogged. I finally blew out the obstruction and it turned out to be a big dead spider- yuck!

Seems like there's a one way valve somewhere inside the tube- water flows fine from the evaporator, but not vice versa. So the spider must've got caught in the valve, died and totally stopped it up! hopefully a once in a lifetime occurrence.

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