Question about 2005 Dodge Caravan

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Rear heat not blowing on 05 grand Caravan

Have a 05 grand caravan whose rear air controls blow great when the temperature control is moved to the cool position, however, once moved to the heat position, the air gradually stops coming out of the vents, but the blower is still running the same speed as evidenced by the sound of the motor in the rear. How and where do I check air door and vacuum operations for this system ..... or is it something else completely maybe? Also, would it be related to the front system taking an unusually long time to heat up?

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  • agentair2002 Jan 17, 2009

    Thank you, the heat does seem to be blowing up front ok. It just takes an unusually long time before it blows hot. I suspect a possible thermostat starting to stick open but that doesnt solve my rear heater control issue. Whenever the temperature selector in the rear is placed on heat,... the air flowing through the rear vents slowly stops altogether. Yet in the cold position, the air flows through massively. I suspect a air flow door not opening correctly but not sure where to look or whether or not to start pulling the headliner out to see if the problem lies there first. Got any ideas?

  • agentair2002 Jan 18, 2009

    Sorry if I misunderstood your directions, but are you suggesting I need to replace the blower motor or is that where the intake actuator door is located? The rear blower motor seems to be working fine regardless of when the overhead rear temperature knob is on hot or cold. The problem is that when it is dialed to warm air,.. the air gradually stops flowing out of the ceiling ducts altogether, but the rear blower is still blowing hard. Almost like someone is placing a hand over the intake of a vacuum? Make any sense? I did some testing around today and found something else interesting out. When you turn the overhead rear controls off, and use only the fan controls from the front dash to control the rear air, the air flows fine both on cold and hot temperatures?!?!? The problem only seems to show up when you try to let the overhead rear controls be used independently of the front dash controls, and only when the temp dial is turned to warm.

  • Anonymous Mar 30, 2014

    Coming from the rear sliding doors

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If you have the heater control up front on the floor or on defrost you should check that the heat is not blowing from under the d/p seats. If you move the heater control to dash you should have it coming out the top vents.

You could be having a coolant problem and need to check that first, If coolant level is normal you might have a thermostat going out. Both will cause your heat not to warm up at normal speed. If you need any thing let me know.

Posted on Jan 16, 2009

  • Ward  Messervy
    Ward Messervy Jan 17, 2009

    To remove the right quarter trim panel where the the blower motor is.
    First remove the rear seats.
    remove the plastic plugs from the trim panel that is being removed, Use a flat bladed screwdriver
    Remove all mounting screws with a screwdriver and release the mounting clips. Disconnect any wire connectors from accessory power outlets, if so equipped
    Separate the trim panels from the body.

    remove the screws securing the blower motor housing to the heater/air conditioning unit (one screw is located on the evaporator cover)
    Twist the motor out of the housing and disconnect the wiring connector.

    Installation is the reverse of removal.
    This is where the motor is hope this helps.



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