HVAC air flow only works on the defrost setting?

200,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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DPEREZ1000
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  • 1 POST
The air flow is only coming out on defrost no matter what is selected on the control panel.
Oct 12, 2022 at 12:51 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,248 POSTS
Hi,

Chances are the mode door actuator has failed. This actuator is responsible for the air flow direction. Take a look at this link:

https://www.2carpros.com/articles/air-vents-stay-in-the-defrost-position

What I would do is remove it and see if it responds when you change the air flow direction. If it doesn't, replace it.

I attached the directions below for the removal and replacement. Let me know if this helps or if you have other questions.

Take care,

Joe

See pics below.
Oct 12, 2022 at 2:41 PM
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