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2007 Dodge Caliber Question: my heater blower was working fine and all at once started making a roaring noise

 

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leefar, Monterey, TN, September 07, 2012, 09:18
 Rookie

i turned the blower up on high and it sounded like it blew something loose and was doing fine but every now and then it roars and i can feel the vibration in the steering wheel when it is on high

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  • Answer #1

    One Stop Auto Care (28 Answers) , Los Angeles, CA - (323) 856-1617
    OneStopautocare September 07, 2012, 10:00
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     Technician

    . Check the blower motor speed control wires at the HVAC control panel on the C2 connector. The Blue wires with colored tracers are the control wires, grounding them one at a time will provide a different speed for each wire. The Black wire is the ground for the blower motor circuit. If jumping the Blue wires to the Black wire one at a time varies the blower motor speed, the HVAC control panel is bad.

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  • Medium-star Best Answer
    September 07, 2012, 15:33
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     Master

    WILL NEED TO REMOVE BLOWER ASSEM. AND CLEAN OUT FOREIGN MATERIAL TRAPPED IN BLOWER / HEATER BOX.
    BLOWER FAN OUT OF BALANCE WILL VIBRATE DUE TO OBJECT IN FAN WHEEL.,

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