A/C only works on setting 4 on 1993 Nissan Altima

when i got the car, setting 3 & 4 was working. a month later now only setting 4 works. i can hear the a/c compressor kick on when it's on setting 1,2,3. but no air is being blown out..what's the problem

by in Lahaina, HI on March 03, 2010
3 answers
ANSWER by on March 03, 2010
If the fan motor only works on high then the fan motor resistor is bad and needs replacement
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ANSWER by on July 06, 2010
it could also be a bad fan speed switch
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ANSWER by on July 07, 2010
I agree with GetrDone, it is the resistor that have gone on positions 1 & 2. The resistor pack (which all of the resistors reside for the blower) sits next to the blower motor. Here is a link sample of the resistor pack http://www.partsgeek.com/catalog/1993/nissan/altima/climate_control/blower_motor_resistor.html. Extremely rare for the switch goes bad.
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