Question about Ford Explorer

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Started noticing a hissing sound coming from under the dash about two months ago, possible vacuum leak? Now that the heat is on us in Dallas the AC shuts down with just partial load on motor, kinda of like what would happen when a floored my old 85 Mustang GT, any suggestions??? Thanks

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  • cyoung27 May 26, 2009

    Not sure about the compressor, but it indeed does shut down blowing from the vents.


  • cyoung27 May 26, 2009

    Thanks! Is there a solenoid under the dash, passenger side, that will temporarliy shut down vents and AC under WOT conditions? This is where I hear the hissing sound when accelerating? Thanks

  • cyoung27 May 26, 2009


  • cyoung27 May 26, 2009

    I will find out tomorrow, when I have time to look at it



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Does the compressor shut off or does it stop blowing from the vents?

Posted on May 26, 2009

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  • yankstorm02
    yankstorm02 May 26, 2009

    OK the vents are controlled by vacuum. Open the hood, on the passenger side on the firewall you will see a vacuum hose going through the firewall find that hose and check it for vacuum with engine idling

  • yankstorm02
    yankstorm02 May 26, 2009

    Check the hose carefully for breaks this is the most common place for a break

  • yankstorm02
    yankstorm02 May 26, 2009

    No problem,those actuators are relatively inexpensive



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