2004 Ford F350 Logo
Posted on Oct 17, 2010
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2004 f350 ford heater blows cool air but hoses are both warm-where do i start looking

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Jeffrey Turcotte

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  • Posted on Oct 17, 2010
Jeffrey Turcotte
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Check to see if the blend door is moving where you change the temperature setting. I think your blend door is behind the glove box. Here are instructions for removing the actuator. Take it off, plug it back in and see if the motor rotates. Also check to see if you can rotate the blend door by hand. If you can rotate it by hand, the motor is probably broken of the gears are stripped. Let me know if you have questions.

  1. Release the stops and lower the glove compartment door.
  2. Disconnect the connector.
2004 f350 ford heater blows cool air but hoses are - f4b0b74.gif Fig. Blend door actuator-F-250 & 350


  1. Remove the two screws. Rotate the blend door actuator and bracket assembly. Remove the electronic blend door actuator and bracket assembly.
  2. To install, reverse the removal procedure.

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  • Expert 120 Answers
  • Posted on Oct 17, 2010
Sean Marovich
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Sounds like your climate control is not changing the blend door over to heat. I would inspect for a broken vacum hose somewhere. The blend door in your vehicle needs all vacum hoses to not be leaking in order to switch over.

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