Either the door is stuck itself, or the actuator that moves it is faulty or not receiving power. You can test power with a voltmeter and test the actuator itself with an ohmmeter.
Posted on Jun 03, 2010
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Posted on Jan 02, 2017
Jan 03, 2015 | Cars & Trucks
Dec 24, 2014 | Chrysler Cars & Trucks
Apr 02, 2014 | Hyundai Motor 2003 Elantra
May 29, 2017 | Ford Cars & Trucks
Air
Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
In
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car. Always have this problem confirmed by a dealer or
qualified repair shop as it is a very expensive repair.
Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.
Dec 19, 2012 | Mazda MAZDA6 Cars & Trucks
Air
Temperature Control Blend Door Failure No Heat or no AC (dependes on
where door sticks)
In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.
Nov 05, 2012 | Cars & Trucks
Air
Temperature Control Blend Door Failure
In
all modern cars there is a tiny DC electric motor driven gear drive
that moves a plastic door that blends heated and cooled air from the
AC and the heater core, this is called (interestedly enough) the air
temperature control blend door actuator. The motor that moves this
door fails because the door starts sticking from warping, most common
complaint is no heat but it can be no AC as well. To replace these
parts (blend door and blend door actuator) you must remove the entire
dash from the car.
Oct 30, 2012 | 2000 Ford Focus
Feb 13, 2010 | 1999 Nissan Pathfinder
Oct 18, 2009 | 1999 Chevrolet Silverado 1500
Nov 27, 2008 | 2001 Chevrolet Silverado
Jul 13, 2014 | 2006 Ford Ranger
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