Mechanics

BLOWER FAN RESISTOR

2003 Ford Focus • 2.0L 4 cylinder 2WD Automatic • 65,000 miles

The blower fan on my 2003 focus was only working on the highest setting, so I set out to replace the resistor. I plugged into the new unit and checked. The lower speeds now worked but within seconds, the resistor unit was extremely hot./And it burned my fingers. I checked the the part number and it was correct. Then tried another resistor and had the same results. Both of these resistors were new. Any ideas? Thanks
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Mack62
July 15, 2014.




THAT'S HOW THEY LOWER VOLTAGE

THE RESISTANCE IN THE WIRES MAKE'S 'EM GET HOT

IN MANY CASES, THE RESISTOR IS INSTALLED IN A DUCT SO THAT THE PASSING AIR WILL COOL 'EM OFF

MAKE ANY SENSE?

THE MEDIC
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Tiny
CJ MEDEVAC II
Jul 15, 2014.
Make sure the blower motor isn't drawing too many amps. That is a common cause of the resister going bad in the first place.


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