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2003 Ford F-150 Question: Why does a/c blow out of defrost?

 

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Chris2003, 5.4L V8, Statesboro, GA, January 22, 2011, 08:56
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A/C will only blow out of defrost. The air will not blow out of vents.

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  • Answer #1

    January 23, 2011, 01:04
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     Master

    You have a vacuum leak somewhere in the dash. Check all vacuum hoses under the dash to make sure they are connected.

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  • Answer #2

    Visitor, April 04, 2011, 08:07

    Go to this web site and following the instructions. Its simple and it fixes the problem. Cost very little. I did it and it did fix the same problem your having.

    http://www.fordf150.net/forums/viewtopic.php?t=72104

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