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My 2002 Ford Explorer blows heat out of all vents except the front defroster. The Mode dial does not change into the defrost position.

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  • chaddotzel
    chaddotzel Nov 05, 2012

    It is actually only blowing through the dash vents not even on the floor now.

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  • 6 Answers

You could have a vaccum problem

Posted on Nov 05, 2012

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Posted on Jan 02, 2017

  • 29 Answers

SOURCE: My front defroster doesn't work

Their is a vacuum actuated valve that redirects the flow of air from the panel to the defrost vents when the defrost is selected. I would check the vacuum line running to the valve while the vehicle is running with the defroster on and check whether or not the line is pulling a vacuum to actuate the valve, if not you obviously have a bad line or vacuum line fitting. If you have suction on the vacuum you will need to check the valve and see that is functioning properly. The valve is usually located under the dash on the passengers side. If you are mechanically inclined i would go to a local auto part store and pick up a repair manual for your car for about $20 as they contain diagrams and info that will save you alot of money.

GGBMDB

Posted on Dec 08, 2008

  • 37 Answers

SOURCE: PROBLEM WHEN SELECTING THE DIRECTION FOR THE AIR

Sounds like you have a supply vacuum problem. When you lose supply vacuum to the control head it defaults to defrost.

Posted on Mar 13, 2009

  • 31 Answers

SOURCE: when i turn the air on it doesn't flow from the front vents.

Sounds like the switch or actuator is not operating. Some vehicles have mechanical operators, and some have vacuum actuators. If a vacuum line is loose, it will not actuate.

Posted on Aug 01, 2010

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