Heater type hot air coming out of vents instead of cold air from air conditioning

2008 MERCURY MARQUIS
40,000 MILES
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IFORMAN
  • MEMBER
  • 4 POSTS
Hot air depending on the temp setting, very hot at 90 degree setting and medium hot as I lower the setting but NO COLD AIR. Blower blows OK. It appears the A/C settings are completely ignored.
Oct 13, 2011 at 5:21 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
Is the AC compressor engaging?
Oct 13, 2011 at 5:23 PM
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IFORMAN
  • MEMBER
  • 4 POSTS
I really don't know, how do I check that?
Oct 13, 2011 at 5:30 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
When you turn the ac on, with the engine running, open the hood and watch the compressor clutch (on front of compressor pulley). You will hear a click and see the center of the clutch spin.
Oct 13, 2011 at 6:01 PM
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IFORMAN
  • MEMBER
  • 4 POSTS
I'll check it out tomorrow and get back to you, thanks
Oct 13, 2011 at 6:14 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,240 POSTS
I'll look for your response.
Oct 13, 2011 at 6:25 PM
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IFORMAN
  • MEMBER
  • 4 POSTS
Hi, I checked the compressor wheel and when I turn on the a/c the front compressor wheel does start to turn.
Oct 14, 2011 at 12:54 PM
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