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

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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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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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. 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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