Blower speed?

2002 DODGE DURANGO
157,000 MILES • V8 • 2WD • AUTOMATIC
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WJV1
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MY Ac only works on high and it blows very cold but it does not work on low or medium, what are some of the things i can check to keep from payng a Hugh AC repair bill.
Jul 8, 2009 at 7:33 AM
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BUDDYCRAIGG
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are you talking about the blower fan only works on high?
Jul 8, 2009 at 2:48 PM
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WJV1
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yes the switch that turns the air up higher it only blows in the high position.
Jul 8, 2009 at 9:06 PM
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BUDDYCRAIGG
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4 things it could be the problem
a fuse.
the blower motor relay
the blower motor resistors
the blower speed switch.

I emailed you a schematic,
it's a 99 full sized pickup, but i think it will be the same.
Jul 8, 2009 at 9:40 PM
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AMEGILL
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heater blower only works on high speed
Aug 8, 2020 at 10:56 AM (Merged)
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MERLIN2021
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Check for power getting to the resistor, on the heater plenum, the resistor then plugs into the blower, if power is present, replace resistor, if no power, check fuse, and or switch...
Aug 8, 2020 at 10:56 AM (Merged)
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