How to drain AC overflow

Tiny
CLOVE38
  • MEMBER
  • 2004 HONDA CRV
  • 118,276 MILES
Water seeping through passenger side of vehicle and soaking mat and floor. AC works fine while driving straight or right turns but sounds like water flowing to passenger side when taking left turn. Is this something I can do myself of is it major and needs to be taken to shop?
Tuesday, September 4th, 2012 AT 1:44 AM

2 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
The drain tube is plugged. Look under the hood on the passenger side of the firewall for a rubber tube hanging down, typically about 4" long. Squeeze the end to open it up to see if anything will dislodge and water comes pouring out. It not, you'll have to remove that tube and stick something into the drain to clear it.
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Tuesday, September 4th, 2012 AT 2:01 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,910 POSTS
Happy to hear you solved this. A properly functioning AC system is only expected to lower air temperature roughly 20 degrees. It's the removal of the humidity that produces the comfort. The humidity condenses on the evaporator in the dash, just like it does on a cold milk jug or soda can on a humid day. That condensation collects in a pan under the evaporator, then runs onto the ground. Plugged drain tubes are fairly common. Usually it's leaves and other debris that has found its way in. Sometimes that rubber tube has to be removed to get access to the blockage. There's usually a wire ring around the tube to squeeze, then it can be pulled off.

Please come back to see us with your next problem.
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Wednesday, July 26th, 2023 AT 4:13 PM

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