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A/C fades from body to feet on hills.

Discussion in 'Stock 1995 - 2001 Explorers' started by geckolyn, June 4, 2016.

^^Searches ExplorerForum.com^^
  1. geckolyn

    geckolyn New Member

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    Please excuse this posting if this has already been asked, but could not find anything with a search.

    1998 Explorer XLT V8. When driving with the A/C on, the air fades from the dash vents to the floor vents when going up hills. They don't have to be very big ones, but just a change elevation will do it. My thoughts are a blend door issue, but am I looking more at a vacuum issue?

    Thank you,
    Lyn
     
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  3. drdoom

    drdoom Well-Known Member

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    Vacuum.
     
  4. geckolyn

    geckolyn New Member

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    I thought so, but why all of a sudden would it do it. Any idea whats gone bad?
     
  5. Rick

    Rick Pumpkin Pilot Staff Member Admin Elite Explorer

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    When you are on the throttle hard there is very little engine vacuum to control the vacuum servos. Check your hoses for deterioration. Check the elbow by the power brake booster and any caps on the vacuum tree on your intake manifold.
     
  6. drdoom

    drdoom Well-Known Member

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    If necessary check the lines going to the reservoir ball above the fender liner passenger side (if applicable).
     
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  7. swshawaii

    swshawaii Elite Explorer

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    ^ Sounds like drdoom nailed it. Always accelerating when climbing hills. Sound familiar?
    Round plastic ball in right front wheel well??
    http://www.explorerforum.com/forums...n-right-front-wheel-well.303406/#post-2623161
     
    Last edited: June 5, 2016
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