1989 Mercury Marquis heater/defrost

1989 MERCURY MARQUIS
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PROVAZEK
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  • 1 POST
Heater problem
1989 Mercury Marquis 6 cyl Two Wheel Drive Automatic

When the heater is on it blows out a lite, white mist or smoke and has a peculiar stale/exhaust like smell. In addition, the defrost does not blow out at all.
Feb 5, 2010 at 11:40 AM
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MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS
The mist is steam escaping from the heater core, this means there is a hole in it and it must be replaced, fixing the defrost door while the heater core is removed will be easy. It probably needs lubrication on the shaft.
Feb 5, 2010 at 11:49 AM
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