Driver side blows semi cold air while passenger side blows warm/hot air it is not a dual air control unit could the air blend door actuator be the issue
SOURCE: passenger side blows hot air when front control set to Air
you cant adjust it ,this requires the dealers computer to re set it,or a phyiscal control has packed up like a vacumn pipe has split where it pushes onto the valve that controls the flap in the heater unit.
SOURCE: 2004 Dodge Ram 2500 air conditioning
It sounds like your electronic vent actuator has gone bad, it's common to go bad and may need to be replaced. There are tinny gears that wear out and the vent actuator stops working. You can try this, turn the radio off first so you don't have to enter the reset code to activate your radio. Disconnect the battery for 30 seconds and reconnect it, if the actuator has lost it's base line and stuck in the open heat position, this will reset it, just make sure the setting is to cold and off before disconnecting and reconnecting the battery. If this does not work, then it's a bad actuator and Auto Zone should have the part you need and will have the step by step instructions for you to the job you self, I believe the dealer is a $415,00 repair cost for this. Good luck and keep me posted.
SOURCE: 2002 Dodge Ram pickup heater and defroster blows
sounds like it could be a mode door actuator problem which directs the flow of air in the heater case,
SOURCE: air conditioning blows cold on drivers side but
dodge has dual blend door actuators on the air box. you have to pull the dash board assembly out to access the passenger side door actuator. it calls for 5.8 hours to do this job. you also have to evacuate and recharge the ac system.
SOURCE: I think I have a blend door problem just not sure
this unit is eclectric, it uses actuator motors to control the blend doors and selector doors, you are correct its a blend door problem, if you look under the dash on the passengerside there will be a motor mid way, thats the blend door actuator and theres another on the driverside. you what pass/side. move your controls to pin point the right one,hope this helps.
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