Question about 2003 Dodge Durango

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Defroster problems I have a 2003 durango. I need to know where the blender selector motor is. My problem is when I want to switch it to defrost it switches to blow out by my feet.

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  • Anonymous Nov 26, 2008

    Air blows fine out floor and front vents. Nothing blows out of defroster

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  • Dodge Master
  • 60,769 Answers

It is in the heater/AC ducts, you must remove the entire dash assembly to access it for repair, about 12 hour job.

Posted on Nov 07, 2008

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1 Answer

Why wont my 2001 ford windstar blow out of vents ? only on defrost?


Air Flow Control
Air flow control is accomplished in the following manner:
  • Primary control is through the function selector knob , mounted on the heater function selector switch, which is part of the heater control .
  • The function selector knob has the following positions: OFF, PANEL, PANEL/FLOOR, FLOOR, FLOOR/DEFROST and DEFROST.
  • The heater function selector switch combines a vacuum selector valve with an internal electrical switch.
  • The vacuum selector valve directs source vacuum to various vacuum control motors (18A318) . Refer to the System Airflow Schematic and Vacuum Control Charts.
  • An internal single-pole electrical switch is also controlled by the selector. The switch controls the electrical supply to the heater blower motor switch (18578) .
  • The position of the function selector knob determines the manner in which the system will operate.
  • Each position of the function selector knob is detented for positive engagement.
  • You probably have a vacuum leak , Pull heater control panel an check for vacuum . A broke vacuum hose or The vacuum selector valve is bad ! Or check for a vacuum hose in the engine compartment being off somewhere !

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Your selector is controlled either my linkage or pressure tubes. A common problem is for a crack to develop in the hoses and leak the pressure needed to switch to the desired setting. Inspect the hoses and or linkage. that will solve it

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1 Answer

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Hopefully the remedy will not include dash removal which is the worst case scenario.

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sound lick the blender motor has failed and there is a good chance the dash will have to be removed to fix the problem

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it may be the switch itself they do go bad.Otherwise he could have pinched a hose or left one off. But it sounds like he is trying to help.

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When i have the heater/defroster on the heater below blows cold air while the defrost blows hot. when i switch to just defrost the bottom heater stays on and blows cold air. when i have front dash and...


It sounds like you have a blend air door stuck. This is in the housing of the heater a/c blower unit under the passenger side of the dash. There is a motor on the top of the housing that could possibly be stuck or on working.

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1 Answer

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Here's the wiring diagram of the manual AC controls. I suspect the problem is in the 'mode' switch/motor.

47fdc72.jpg

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