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Air only blows out of the defrost vents.

Discussion in 'Explorer, Ranger, A/C & Heater systems HVAC' started by lbowout, July 31, 2011.

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    1. lbowout

      lbowout New Member

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      City, State:
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      Greetings - bought my son a 2002 Explorer XLT several months ago.

      Today the A/C, which works fine (nice and cold), decided to switch from blowing through the vents to only through the windshield defroster and the sides of the center floor console.

      I thought it might be the blend door but the air blows cold and will warm up when turned over to the hot side of the temperature control.

      He went outside to check the A/C and it started blowing through the vents then jumped to the windshield and floor automatically.

      What could be causing this to happen?

      Thanks.
       
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    3. 4pullingGM

      4pullingGM Active Member

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      Sounds like a vacuum leak, when the hvac system loses vacuum it defaults to defrost. Could be a loose or cracked vacuum line either under the hood or under the dash. Happy hunting and welcome to the site!
       
    4. BrooklynBay

      BrooklynBay Staff Member Moderator Elite Explorer

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