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Thread: is this the solution for bad smell in AC

  1. #1
    sebounet's Avatar
    sebounet is offline Cadillac Owners Member
    Automobile(s): cadillac ATS 3.6 AWD performance
    Join Date
    Nov 2013
    Montreal, Canada

    is this the solution for bad smell in AC

    i was answering a thread about someone issue on the ATS. as a joke i posted this picture.


    and i found the whole story here. if you look the message from OP he explains it

    [–]GabeWasHere[S] 22 points 12 jours de ša
    it actually wasn't for the heater core, the hvac housing was holding water from the evaporator drain tube being shoved up during assembly, but it would be the same for a heater core replacement.

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  3. #2
    Join Date
    Jun 2013

    Re: is this the solution for bad smell in AC

    According to flycaster there is a newer solution where they go in through the bottom of the car and do not have to touch the interior.

    There is a third solution, which I use. A few minutes before my destination, I turn off the AC compressor, but leave the fans blowing. This does a good job blowing out out hoses and vents. Then there is no condensate to cause a stink the next time you start.

    Check around this site. There are already several threads on this topic.

  4. #3
    Maxplot's Avatar
    Maxplot is offline Cadillac Owners Fanatic
    Automobile(s): 2017 Prem-Lux CT6 3.0TT - Black Raven, 2013 SRX Platinum Ice
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    Jul 2013

    Re: is this the solution for bad smell in AC

    I always just leave my A/C in Auto and have never smelled anything on startup. I have in previous cars done what JavaGirl suggests and turn off A/C compressor a few blocks before I get home, but I don't on my ATS. I have noticed that majority of complaints with A/C mold smell live in the South where the humidity is higher.

  5. #4
    Lorne's Avatar
    Lorne is offline Cadillac Owners Member
    Automobile(s): ATS 2.0 Turbo Performance Manual
    Join Date
    Apr 2013
    Experienced mild smell on startup in summer here in Southern Ontario, but haven't noticed it since it got cold.


    Dealer did an HVAC update last time I was in for service. I wasn't clear what it was for. Was it to address this issue?

  6. #5
    ben.gators is offline Cadillac Owners Master
    Automobile(s): '14 ATS Premium with 3 pedals | Past: '13 ATS Performance & '99 Seville STS
    Join Date
    Aug 2009
    somewhere good!

    Re: is this the solution for bad smell in AC

    I live in Hawaii and I have the same issue. I have been using the technique that Javagirl mentioned and it works. I will keep doing this until a standard, safe, procedure comes out to fix the problem without tearing up the entire dash!

  7. #6
    GJB's Avatar
    GJB is offline Cadillac Owners Connoisseur
    Automobile(s): 2013 ATS4 3.6 Premium Build Date 12/21/2012
    Join Date
    May 2013
    Northern VA

    Re: is this the solution for bad smell in AC

    I told my SA to let me know when they are proficient at performing this mod. I figure I'll get it looked at next summer. Never had the musty smell too bad just a little on start up in the summer. My driveway is on an incline and the pan really drains heavy when I pull in the driveway but not when I park on flat surface.


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