I have a 03 grand marquis with the digital thermostat. When i turn on the car the air Only blows out the defrost and floor but if i wait it eventually blows out my vents. How do i fix this problem?

Asked by May 08, 2015 at 09:21 PM about the 2003 Mercury Grand Marquis LS Ultimate

Question type: Maintenance & Repair

Its not  the vacuum line, i have already
checked it.

1 Answer

65,775

Check the vacuum module,sound,s like it may be sticking,may have to replace it.

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