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



Chris2003, 5.4L V8, Statesboro, GA, January 22, 2011, 11:56

A/C will only blow out of defrost. The air will not blow out of vents.

2 Answers
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  • Answer #1

    January 23, 2011, 04:04

    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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  • Medium-star Best Answer
    Visitor, April 04, 2011, 11:07

    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.


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