1999 Mercury Cougar

DUFFEYAARON

MEMBER
1999 MERCURY COUGAR

Air Conditioning problem
1999 Mercury Cougar 6 cyl Front Wheel Drive Automatic

what would make my ac only work on high

Friday, July 10th, 2009 AT 12:55 PM

1 Reply

BLUELIGHTNIN6

MECHANIC
16,542 POSTS

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.

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