Question about 1997 Jeep Grand Cherokee

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The AC evaporator is leaking on my 97 grand cherokee. Floor boards full of water. The evaporator was replaced 2 years ago. What should I do?

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  • yadayada
    yadayada May 28, 2010

    the AC evaporator doesn't leak water.

  • mutsy322 May 28, 2010

    It is leaking above the passenger's feet and running under the carpet and front seat clear into the back passenger seat floorboard. I don't think it is the evaporator itself but the drain from the evaporator. How do you unstop the drain and how can I get to it?

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I'm having the same problem as you are right now......will send ya a message if i get it fixed

Posted on Jun 10, 2010

  • jdmorris09 Jun 13, 2010

    Fixed it.....drilled the hole, rodded the lines (which were clean), forced compressed air through, and tested it. Water started flowing onto the ground, but I had a good leak in the seal next to the fire wall. A thick layer of silicon all the way around the seal and in drill hole cleared up the leak. Carpet's dry.

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The drain tube for the evaporator case is plugged with various debris which allows the normal accumulation of condensed water to overflow the case onto the floorboard. Run a brush or similar tool into the tube which should immediately drain the cavity. If you catch the water in a pan, inspect it for debris. This should work ok for a year or so, then re-clean the drain as needed. The more the AC is run, the more debris will accumulate. Hope this helps!

Posted on May 28, 2010

  • mutsy322 May 28, 2010

    I understand but I have crawled under the car and cannot locate any drain. There are no tubes, holes etc that even remotely look like a drain! Can you give me a specific location on the drain?
    Thanks
    mutsy

  • drallim May 28, 2010

    Follow the refrigerant lines that go to the evaporator back toward the firewall. They should wind up going into the evaporator case. Feel along the underside of this case on the engine side of the firewall for a drain opening. If nothing, continue checking the case on the passenger's side of the firewall for the drain. If it ties back into the rubber tube that you have already found, then disconnect it at the case and poke into the case opening which should discharge the accumulated water. The outside drain should proceed from the lowest point on the rubber tube. Good luck!

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The drain is under the car on the bottom of the firewall on the passengers side, hard to see, u really need it up in the air

Posted on May 28, 2010

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  • mutsy322 May 28, 2010

    Ok, I have been under the car and cannot locate any drain or see anything that even looks like a drain. There are no holes, tubes or anything I can see with a flashlight unless it drains into the frame of the car! Do you know the exact location under the car?
    Thanks,
    mutsy

  • yadayada
    yadayada May 28, 2010

    it is there and it is very hard to see, it is hioden by the sterring gear.

  • mutsy322 May 28, 2010

    Steering gear? That is 2 feet in front of the firewall on the cherokee! I did find the rubber tube inside the car that drains the plenum. It goes from plenum to a dis-connect and then back up into the back of the where the glove box is. I pulled the disconnect and water drained out that was coming from the plenum but I cannot find an outside drain!

  • txezrider Jul 20, 2011

    I had the same problem on my 97 Jeep Grand Cherokee. You will not see the drain from the bottom of the vehicle. The drain is actually inside a part of the frame in front of the firewall. I adapted a small funnel from the bottom of the console to the existing hole in the firewall. I used silicon to seal it around the hole and the water now goes outside.

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Water is just condensation from the evaporator, there hsoul be a drain in the plenum to reroute water to the outside, it may be disconnected or plugged

Posted on May 28, 2010

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  • mutsy322 May 28, 2010

    I looked under the car and cannot locate any drain. There are no tubes, holes or anything that looks like a drain! Any ideas on location?
    Thanks
    mutsy

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