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1989 Mercury Marquis heater/defrost

Tiny
PROVAZEK
  • MEMBER
  • 1989 MERCURY MARQUIS
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.
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Friday, February 5th, 2010 AT 7:40 PM

1 Reply

Tiny
MERLIN2021
  • 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.
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Friday, February 5th, 2010 AT 7:49 PM

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