2003 Expedition Blend Door
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New User
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2003 Expedition Blend Door
I have a 2003 expedition and have no heat coming out of my defrost or front vents. When I turn on the vents in the back I have heat but no heat up front. It blows air but no heat. I don't hear any clicking or any door open or close. What do I do first. I think I use to hear a door close or open. What do I do?
New User
Joined: Aug 2010
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Check the vacuum lines under the hood next to the fire wall on the passenger side. I had one leaking and the vents under the dash would not function. I believe the blend door is part of this same system. you can crawl under the dash and work the diaphragms manually to see if that works.
Hotshot
Joined: Jan 2004
Posts: 19,762
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From: St Louis
believe the blend door is part of this same system.
This is NOT a vacuum problem, check the blend door operation.
Logistics Pro
Joined: Jan 2001
Posts: 3,740
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From: Central NYS
Hotshot
Joined: Jan 2004
Posts: 19,762
Likes: 1,079
From: St Louis
His description is not of an incorrect airflow problem. He specifically said "No heat" so I'm taking it at his description. "No heat" is never a vacuum problem.
Vacuum problems show up as issues where the air inlet/outlet is incorrect.
Vacuum problems show up as issues where the air inlet/outlet is incorrect.
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