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2004 Chrysler Pacifica

Question: Interior fan stays on high

Question

incarolsgarden, 3.5L V6, Fall Creek, OR, February 01, 2009, 12:34
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Interior cabin fan alway remains on high. The fan speed control has no effect. Powering off the climate control has no effect.

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  • Answer #1

    Johnny Mopar February 01, 2009, 18:33
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    The power module for your Auto Temp Fan Control is defective. The blower motor power module allows the microprocessor-based automatic temperature control (ATC) A/C-heater control to calculate and provide infinitely variable blower motor speeds based upon ATC programming which uses a pulse width modulated (PWM) circuit strategy. The Blower Motor Power Module is easily replaced in less than 1 hour.

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    Visitor, July 29, 2010, 16:24

    have replaced the blower motor resister once it solved the problem then 7 months later it reared its ugly head again replaced same part no fix this time fortunatley dealer took part back! What else could it be please help very irritating!!!

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  • Medium-star Best Answer
    BO COPE March 05, 2009, 16:45
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    I HAVE A 2004 PACIFICA WITH THE SAME PROBLEM. THE BLOWER MOTOR RESISTOR WAS BAD. IT IS LOCATED BEHIND THE GLOVE BOX UNDER THE DASH. THERE IS ALSO A FILTER UNDER THE DASH I FOUND FOR THE AIR COMING INTO THE CAR. THIS HAS NOTHING TO DO WITH THE FAN RUNNING BUT MINE WAS DIRTY. THR PART IS EASY TO CHANGE AND COST LESS THAN 20 DOLLARS.

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    Visitor, June 11, 2010, 12:09

    Does the dash need to be removed to get to this part?

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  • Answer #3

    Visitor, May 13, 2010, 08:11

    well i jsut had that problem in my shop ,,and i had to replace the control unit on the dash ,,then blower motor resistor(module).the blower motor module was 254.00 dealer item only..and the control unit was a lil harder to find ,,the dealer told me they are not making them anymore so i had to find one in a salvage yard i tried to replace resistor first but it didnt change a thing...

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  • Answer #4

    Visitor, January 18, 2011, 06:21

    I had the same problem and went through the same steps, but it ended up being my ignition switch! Amazing how one thing can effect everything else!!

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