AC: sighing noise every minute or so from the rear.

Discussion in 'Heating & Cooling' started by oldpaddy, Jul 22, 2019.

  1. oldpaddy

    oldpaddy Full Access Members

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    Hi all, I've got a sighing noise coming from the back every minute or two. I think it started yesterday. The back doesn't seem as cool either. It's been high temps and high humidity. I've had it cranked. 2014 limited.
    Thanks
     
  2. stamp11127

    stamp11127 Super Moderator Staff Member

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    One of the first steps to perform is determining the static pressure of the system after the engine has cooled down and the system has equalized. The next step is determining the low and high side pressures when running.
     
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  3. MrSticker

    MrSticker Full Access Members

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    If I was sitting in the back of an Expy with this heat and the AC didn't work … I'd be sigh'ing about every minute too!!

    (sorry, just had to say that)
     
  4. sjwelds

    sjwelds Full Access Members

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    My 08 did that. Took to my mechanic and he replaced a leaking line iirc. Was consequently low on refrigerant as well.
     

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