air door location and how to replace

2006 MERCURY MARQUIS
101,020 MILES • V8 • 2WD • AUTOMATIC
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LEN LUCAS
  • MEMBER
  • 1 POST
Air blows from floor and defroster no air through air vents.
Jun 24, 2021 at 1:12 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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KASEKENNY
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 18,907 POSTS
This is normally always the mode door actuator. It directs the air flow to the different positions that you select. Here is a guide that will help with this:

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

Your vehicle actually still uses vacuum diaphragms for the floor/defrost door and a separate one for the panel door.

Below is the process from the manual that will help with replacing them. A lot of times the line just comes off the actuator so that may be all the issue is.

Please let us know if you have other questions. Thanks
Jun 25, 2021 at 6:23 PM
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