Question about 1998 Ford Windstar

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Rear air not switching between hot and cold, any suggestions?

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The real air switch on the dash, check and make sure the vacuum lines have vacuum on 1 of them, the other goes to the rear air assy. usually that switch is going bad internally and wont hold enough vacuum to send back, esle it is the vacuum motor in the rear air.

Posted on May 16, 2010

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Obdiitech is right, but there is a quick fix. If you look under the dash on the drivers side you will see a bunch of mult-colored vacuum lines. look for a green line going to a can and pull it off. Then you will find a white line with a one way vacuum switch on it, remove this line from the switch. Then place a vacuum tee between the green and white line then take a small piece of tubing and place between the tee and the can that you pulled the green line off of.

Posted on May 24, 2010

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Posted on Jan 02, 2017

SOURCE: rear air only goes from cold to hot

sounds like the Blend Door Actuator.  Mine made a horrible noise but had not affected the temperture yet.  it was a $40 part from Ford and real easy to fix.

Posted on Aug 16, 2008

  • 59 Answers

SOURCE: rear a/c blows hot air instead of cold air

Bad rear blend actuator.

Posted on Feb 23, 2010

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