2000 Mercury Mystique AC and Heat only work on high

2000 MERCURY MYSTIQUE
118,621 MILES • 6 CYL • FWD • AUTOMATIC
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LUCINDAE
  • MEMBER
  • 1 POST
Why do the AC and heat only work on high?
Jun 3, 2010 at 11:13 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,992 POSTS
Replace the blower motor resistor
Jun 3, 2010 at 11:36 PM
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