Blend door
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Freshman User
Joined: May 2005
Posts: 25
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Blend door
Is there a sure fire way of telling wether you have the infamous blend door problem? I have full heat in the rear but in the front you have to fiddle with the settings and eventually it will come out WARM. When I put it on AC it'll come out cold on all vents except one, the one on the right side of the radio. Same thing with the Heat it'll come out warm on all vents except that one on the right side of the radio, comes out hot.
Eric 99 EB A4WD
Eric 99 EB A4WD
Junior User
Joined: Jul 2004
Posts: 59
Likes: 0
Most of the posts I've read indicate that with a broken blend door the temerature is not regulated at all. With a cold temp setting it throws out hot air, because of the blend door not closing. So maybe your issue is with the temperature regulating switch that controls the blend door. I would start there. I would remove the switch and check it with a volt meter while connected, or an ohm meter disconnected. I believe the rear control switch is identical, so if you want check them side by side, or interchange them, this will help rule out posibilities.
