Question about 2003 Ford Windstar

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Vent controls wont switch from defrost to any other selection replaced switch already I have a 2003 ford windstar, heat and cold air will only blow from the window defrost vents, any other selections won't work like dash, and floor.

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  • Anonymous Mar 12, 2014

    a/c air does not blow at dash vents

  • Anonymous Mar 17, 2014

    door vent heater not opening on my 1989 ford f150 and blows heat through defrost only. what is the cause?

  • Anonymous Mar 18, 2014

    my explorer idles crazy and switches from my vent to the defrost only on my a/c not my heater.

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  • 783 Answers

You have a vacuum leak.Defrost is the default postion(no vacuum).
See if you can locate the small black vacuum line that goes inside the vehicle on the passenger side near the heater core. The trace it back,should see it going to a canister then to the intake manifold.Make sure it is not disconnected or broken somewhere.

Posted on Mar 02, 2009

  • JOHN VENABLE Nov 28, 2011

    My 2003 windstar had the same problem. It was the vacuum cannister. That part# is F2UZ19A566A and the Ford dealer charged me $32.11 for it. Works fine now. My heat was also not working and the problem was the actuator motor.The part# for that is XF2Z19E616FB and the cost was $55.31 plus tax. Now the heat works.

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1 Answer

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Dustin, Sound like vacuum loss to position switch. Defrost is the default position when vacuum is lost in vent control system. Check any and all vacuum lines and connections under hood first, especially any that run through firewall. Check the attached links,instruction and guides, Good luck
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1 Answer

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both of you all prob have problems with the flappers or baffles in the rear that controls the air flow they may just need to be moved manualy becase somthing is stuck in there or the could be broken.

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