2003 jeep cherokee limited edition, blower fan only works on speed 4

2003 JEEP CHEROKEE
290,000 MILES
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JRT2
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  • 1 POST
aircon / heater fan worked on all speeds, then lost 1st, now only operating on hi.
Apr 18, 2012 at 8:37 AM
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WRENCHTECH
  • ✓ASE Certified Mechanic
  • 20,761 POSTS
  • ASE Certified Mechanic
Although that can be a bad switch or wiring, it is usually caused by a bad "blower motor resister" which is located in the blower housing, next to the blower motor. Another thing to consider is the cause of the failure. Excessive draw from the blower motor is a common reason for the resister to fail if it happens more than once.
Apr 18, 2012 at 10:08 AM
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