1999 Mercury Cougar

1999 MERCURY COUGAR
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DUFFEYAARON
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  • 1 POST
Air Conditioning problem
1999 Mercury Cougar 6 cyl Front Wheel Drive Automatic

what would make my ac only work on high
Jul 10, 2009 at 12:55 PM
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BLUELIGHTNIN6
  • ✓ASE Certified Mechanic
  • 16,542 POSTS
  • ASE Certified Mechanic
suspect a faulty blower motor resistor. when it fails, it can no longer restrict the currents to the lower settings, allowing the full current to run straight through and work the high setting only.
Jul 10, 2009 at 12:59 PM
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