ac evaporator leaks water into cabin



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Thread: ac evaporator leaks water into cabin

  1. #1
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    ac evaporator leaks water into cabin

    Hi,

    My recently purchased 03 Dodge Grand Caravan with 52000 miles leaks ac water onto the passenger floor.
    Is this water being "blown back into the cabin" while driving from the drain tube exit?

    The drain exit is a short plastic piece that extends through the firewall. Is this piece supposed to have a length of hose on it. Because it doesn't.

    Thanks dylan

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  3. #2
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    Don't know about the GC but my Toyota 4-Runner did this and all I had to do was shoot some compressed air back through the drain hole and it cleared. Hope yours is as easy.
    1996 Chyrsler T&C
    2000 Toyota Corolla
    2002 Honda Odyssey EX-L

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    Sounds like a good idea

    I will try this out when it stops raining. I have a compressor handy.
    Thanks for the good idea.

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    There's a tsb on this. The drain tube needs to exit the firewall properly. If they don't, they leak. I forget the details.

    I don't have the fsb details handy but others might. Alternatively....try searching the history in these forums. It has definitely been discussed before.
    2011 Ram 4x4 Quad Sport, 5.7L Hemi 5-Spd, Flame Red, 60,000 kms
    2010 Journey R/T AWD, 3.5L , Stone White, 120,000 kms
    2007 Grand Caravan SXT, 3.8L 4-spd, Inferno Red, -SOLD-
    2001 Dodge Dakota Club Sport , 3.9L 4-spd , Flame Red -FOR SALE-

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    NUMBER: 24-008-02
    GROUP: Heating & A/C
    DATE: Aug. 12, 2002
    SUBJECT:
    HVAC Drain Water Leaks Under Passenger Side Carpet
    OVERVIEW:
    This bulletin involves installing a HVAC drain hose.
    MODELS:
    2001 - 2002 (RS) Town & Country/Caravan/Voyager
    2001 - 2002 (RG) Chrysler Voyager (International Markets)
    NOTE: THIS BULLETIN APPLIES TO VEHICLES BUILT BETWEEN MAY 14, 2001 (MDH 0514XX) AND OCTOBER 1, 2001 (MDH 1001XX)
    SYMPTOM/CONDITION:
    The customer may describe a wet front passenger floor or floor carpet. This condition may be due to water (A/C condensate) from the HVAC assembly drain tube.
    DIAGNOSIS:
    Inspect for the source of the water leak. Determine that the passenger side of the front floor carpet is wet because of air conditioning condensate from the HVAC drain tube. As A/C condensate leaves the HVAC drain tube, it may run back along the outside of the drain tube, past the seal, and under the passenger side of the front floor carpet. If the HVAC assembly drain tube is the cause of the water leak, perform the Repair Procedure.

    REPAIR PROCEDURE:
    1. Disconnect the battery.
    2. Disconnect the inlet air temperature sensor.
    3. Loosen the clamp and remove the inlet hose from the throttle body (leave the other end attached to the air cleaner housing cover).
    4. Remove the air cleaner housing cover.
    5. Inspect the HVAC drain tube. Clean out any debris or other restrictions in the drain.
    6. Install the HVAC drain hose onto the HVAC drain tube, making sure the outlet on the drain hose is pointing straight down.
    NOTE: INSURE THE DRAIN HOSE IS INSTALLED SO THE CLAMP ON THE DRAIN HOSE IS BEYOND THE SLOT IN THE BOTTOM OF THE DRAIN TUBE AND TIGHT UP AGAINST THE DASH PANEL.
    7. Install the air cleaner housing cover.
    8. Attach the inlet hose to the throttle body and tighten clamp.
    9. Reconnect the inlet air temperature sensor.
    10. Reconnect the battery.
    11. Set the clock to the correct time.

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    thefrugals,

    Thanks for posting that info. That is the tsb I had in mind.
    2011 Ram 4x4 Quad Sport, 5.7L Hemi 5-Spd, Flame Red, 60,000 kms
    2010 Journey R/T AWD, 3.5L , Stone White, 120,000 kms
    2007 Grand Caravan SXT, 3.8L 4-spd, Inferno Red, -SOLD-
    2001 Dodge Dakota Club Sport , 3.9L 4-spd , Flame Red -FOR SALE-

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    Does anyone happen to have any pics showing this repair? I have a friend who has a 2005 he is having a hard time with it, and I haven't worked on a 2005, so its hard for me to walk him through it. Thanks in advance.

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    I had this same problem on my '03 T&C. When I made the initial repair I bought a short piece of clear plastic tubing from the hardware store and slipped it over the existing drain. It worked fine, but a few weeks later I bought the Chrysler part and put it on. Attached is a picture I took of the factory drain over which you slip the drain tube extension. The original drain is hard plastic and yes, it does a slot in the bottom of it. (Don't have an "after" pic) I was able to put slide it on while laying under the van. Not easy, but doable. Make sure you slide it all the way on, to the end of the slot. Helps if you use some soap or something to lube the rubber extension tube. I now have a dry passenger-side floor. .>)
    PS: There is a later TSB that says to use a rubber o-ring instead of the rubber tube extension, but I'll stick with the extender.
    Attached Images

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    I also had this problem with my '01. Note the TSB only refers to 2001 vehicles, but if you just have a slotted pipe thru your firewall, you need the hose the TSB refers to. About $7.00 at the dealer. Very tight fitting hose with downward bend. Make sure hose bottoms out against firewall, or water will sneak into the slot on pipe.

  11. #10
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    Found the part #: **56000724AB** Hose, Evaporator Drain

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