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My Fan Blower only works on High speed on a 1999 Dodge Caravan?
Sgalea
Check your switch with a voltmeter for continuity in all positions. Get the electrical schematic to your vehicle to help troubleshoot. The average fan is receiving direct voltage on "High" setting but is slightly cut down in increments on other settings by a resistor or rheostat network. Hence lower voltage produces lower speed. You more than likely have a bad control switch.
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∙ 17y ago
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