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2004 Mercury Marquis airconditioning

Tiny
CBPATTON
  • MEMBER
  • 2004 MERCURY MARQUIS
  • V8
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
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.
Wednesday, April 7th, 2010 AT 2:47 PM

1 Reply

Tiny
2 LINSEY
  • MECHANIC
  • 287 POSTS
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.
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Thursday, April 8th, 2010 AT 12:54 PM

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