Question about 2001 Ford F150 Styleside SuperCrew

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Air conditioning blows throught the defrost, at will. Very aggravating.

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  • wences19 Oct 04, 2008

    My van dose the same thing it is a 1998 ford windstar,I need a pic digram if any one has it as I have to attempt to fix it myself can you help?

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Im having the same problem

Posted on Oct 04, 2008

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The differnet air ducts are controled by vacuum, you are getting a loss of vacuum some where, it may be the vacuum switch at the AC controls, or a pinched vacuum supply line in the dash, or a defective check valve at the engine side, the vacuum hose is very small and you will see it near the blower motor houseing in the engine compartment, follow it and make sure it is not damaged or pinched, ther is no easy fix if you are familiar with how the hoes are routed. On the inside of the car they go throught the firewall on the passenger side, they are different colors, I believe the supply hose for vacuum is black. If you need more help call me at 925-459-0571

Posted on Jul 28, 2008

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