Question about 1996 Ford Taurus

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Defrost will not work

If I turn the knob it will change the placement of the air being blown out but will not turn on my defrost. Vents, floor all will work but when you try to get the heat to come out of the dash it is a no go.

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  • Ford Master
  • 81,342 Answers

The switch that does this is the mode control, You will need to pull the heater control out and check that it is sending a vacuum signal to the defrost air diversion door vacuum motor, if it is then the hose is either restricted or the vacuum motor is bad or more likely something has fallen down into the dash and jammed the defrost door, this is the most common problem I saw as a Ford dealer tech for 20 years. The usual item found is a pen or pencil.

Posted on Nov 25, 2008

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Posted on Jan 02, 2017

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  • 37 Answers

SOURCE: Heat wont blow through heater or defroster vents

The door in the heater box is most likely stuck. It is located under the dash on the passenger side

Posted on Dec 06, 2008

  • 20 Answers

SOURCE: Heat wont blow through heater or defroster vents

common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Posted on Feb 23, 2009

  • 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

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vacuum control motor-i4bq0ig33y1522pr2d2rrkk3-2-0.gif

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