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Where is the AC evaporation drain located?

Discussion in '1st Gen. Tacomas' started by Madjik_Man, Jul 31, 2012.

  1. Jul 31, 2012 at 11:21 AM
    #1
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    This morning my passenger side floor well/carpet was soaked.

    It rained hard yesterday and last night and while driving I had to have the defrost on full blast (obviously AC engaged)

    I'm hoping it's just a clogged AC evap drain and not the dreaded windshield seal leak.

    After looking at the FSM I can't seem to locate the drain itself to see if it's clogged and/or to blow compressed air through it.

    Any help is appreciated.

    FYI here's a picture of the only spot I can see water on the firewall. Granted it had been a whole night so who knows how much more water was on it during the major leaking

    [​IMG]
     
  2. Jul 31, 2012 at 11:28 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    It's on the passenger side firewall in the engine bay. There should be a rubber tube sticking out.
     
  3. Jul 31, 2012 at 11:40 AM
    #3
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    So I see a rubber nipple thing sticking out, and it has a drip of water at the end of it:

    [​IMG]


    And I presume it's coming from the (is this thing the cooling unit?)

    [​IMG]


    My question is, how to I make sure the drain isn't clogged causing so much water to leak and soak my passenger side floor well?

    And is a lot of water symptomatic of a clogged AC evap drain or am I looking at a leaking windshield?

    I've never had a problem with either.
     
  4. Jul 31, 2012 at 12:37 PM
    #4
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    So I googled and found several places that say to blow condensed air into the evap drain in the engine bay to clear any clogs.

    Wouldn't this just blow all the crap into the evap box? Shouldn't I try to blow all the crap out the other way?
     
  5. Jul 31, 2012 at 12:48 PM
    #5
    98tacoma27

    98tacoma27 :POOPCORN: Thor

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    Just stick the business end of a coat hanger in there.
     
  6. Jul 31, 2012 at 12:59 PM
    #6
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    :laughing:

    I'll report back
     
  7. Jul 31, 2012 at 1:07 PM
    #7
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    HOLY FACK!

    I just stuck a thin rod in the drain plug and as soon as it crossed through the firewall water started gushing out. At first brown, then clear...

    ...all said I estimate that 1 to 1.5 cups of water spilled out :eek:

    Is my problem solved?

    (btw - I doused my windshield, cowl etc with a hose and saw no visible leaks in the cab)
     
  8. Jul 31, 2012 at 1:09 PM
    #8
    Tacoma Mike

    Tacoma Mike 41 Year Toyota/Chrysler Tech/ASE Master

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    That doesn't sound pleasant in any situation.

    :eek::eek:
     
  9. Jul 31, 2012 at 1:09 PM
    #9
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    So many bad thoughts went through my head.

    I was still laughing as I sticking it in the drain.
     
  10. Jul 31, 2012 at 4:58 PM
    #10
    hossmaster

    hossmaster Well-Known Member

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    it seems like your missing a little aluminum tube that curves down. My drain has a downspout coming out of the rubber isolator out of the firewall. I have since added a rubber tube to it since it was dripping right on my exhaust flange. Maybe not having that down spout is causing you to get too much crap into the drain.
     
  11. Jul 31, 2012 at 8:50 PM
    #11
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    Interesting. I can't find a part number, or even the part itself, in the parts list.
     
  12. Aug 1, 2012 at 6:00 AM
    #12
    TIPICOTACO

    TIPICOTACO Well-Known Member

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    yea you are def missing that piece. it's about a 3-4" aluminum tube with a 90* down-bend. Mine drips right onto my frame so I intend on putting an extension tube on it also like hossmaster did so it drips directly to the ground.
     
  13. Aug 1, 2012 at 6:01 AM
    #13
    98tacoma27

    98tacoma27 :POOPCORN: Thor

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    I've never seen it either. :notsure:

    Maybe some got it and some didn't?
     
  14. Aug 1, 2012 at 6:05 AM
    #14
    JDMcQ

    JDMcQ Well-Known Member

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    Mine has no aluminum tube. Just the rubber thingy. I pulled mine out of the truck and cleaned it out. It's really not that hard to remove.

    My evap box filled up to the point that on right hand turns it would spill on to the blower fan, making a pretty interesting noise. The best was when it ran out of the floor vent nearly filling my wife's left shoe.
     
  15. Aug 1, 2012 at 6:31 AM
    #15
    buzzard1992

    buzzard1992 Yep

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    Mine has the aluminum tube. Drips right on the frame
     
  16. Aug 1, 2012 at 6:59 AM
    #16
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    Without that aluminum tube I believe mine just drips straight onto the ground. It may hit part of the exhaust... I'll have to check.

    Since so much water poured out of the drain once I cleared it of its clog, should I try to remove the housing on the evap box to see if there's a bunch of water in there too?

    Or is that not worth the hassle?
     
  17. Aug 1, 2012 at 7:00 AM
    #17
    TIPICOTACO

    TIPICOTACO Well-Known Member

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    fwiw the tube is 3/8" OD (in case you wanted to add one)
     
  18. Aug 1, 2012 at 8:17 AM
    #18
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    Thanks.

    So the aluminum tube with the 90* in it fits on the outside of that rubber nipple and does not insert into the port?
     
  19. Aug 1, 2012 at 1:40 PM
    #19
    TIPICOTACO

    TIPICOTACO Well-Known Member

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    no it goes into the rubber.. i'l try to get a pic for ya
     
  20. Aug 1, 2012 at 1:52 PM
    #20
    Madjik_Man

    Madjik_Man [OP] The Rembrandt of Rattle Can

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    That's what she said :(

    Thanks, appreciate it
     
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