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Leak in AC system

Discussion in 'Gen 4 Prius Care, Maintenance and Troubleshooting' started by Carsten, Apr 28, 2024.

  1. Carsten

    Carsten Junior Member

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    2017 Prius
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    Two
    Hi all,

    I did a vacuum test on AC system and it would not hold a vacuum.

    Then, after watching a youtube vid, I pumped compressed air into the low side valve to see if I could feel/hear a leak. I did hear air, it was coming out of a hard line that runs up into the front fender. I assume this to be some sort of overflow/drain line, and that this should not be leaking.

    On this hard line there is a little block where the high side valve is on the side of that there is something plugged in. Could this be a solenoid to open and close this line? Maybe this is faulty?

    Thanks, Carsten
     

    Attached Files:

    #1 Carsten, Apr 28, 2024
  2. ChapmanF

    ChapmanF Senior Member

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    2010 Prius
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    IV
    On a gen 3 that would be the pressure sensor. Probably same on gen 4.

    System should not have any solenoid-operated refrigerant drain lines....
     
    #2 ChapmanF, Apr 28, 2024
    Carsten likes this.
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