2004 Mercury Marquis airconditioning

2004 MERCURY MARQUIS
135,000 MILES • V8 • 2WD • AUTOMATIC
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CBPATTON
  • MEMBER
  • 1 POST
unable to get air to blow through the vents. blowning primarily through defrost area, some air flow to the floor area. not sure if problem is with module on the firewall near heater hose or control module behind the radio on the dashboard.
Apr 7, 2010 at 2:47 PM
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2 LINSEY
  • ✓ASE Certified Mechanic
  • 287 POSTS
  • ASE Certified Mechanic
Hi cbpatton, thank you for the donation. That sounds like a vacuum source issue, defrost is the default when no vacuum is present at the control head.Check the vacuum line that goes through the firewall to the engine and let me know what you fink.
Apr 8, 2010 at 12:54 PM
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