HVAC Issues.

2006 MERCURY MARQUIS
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THEPHNX39
  • MEMBER
  • 15 POSTS
When I start my car up and turn on ac or heater, it blows out nothing as if it's congested/clogged on all cycle modes and will do this for like 5 minutes then blow out as normal for a few minutes then back to congested/clogged blowing. What can be causing this and how to fix it?
2006 Mercury Grand Marquis LS
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2006 MERCURY GRAND MARQUIS LS
Aug 20, 2011 at 6:15 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Check and test the blower motor relay/blower motor harness if okay Have the HVAC control module checked out-
Aug 20, 2011 at 6:23 PM
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THEPHNX39
  • MEMBER
  • 15 POSTS
@rasmataz. How to test relay n harness? And where to get replacements?
Aug 20, 2011 at 6:50 PM
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