1988 Mercury Grand Marquis inside windshield fogging during acceleration.
145

Asked by Mike Oct 03, 2012 at 11:44 AM about the 1988 Mercury Grand Marquis

Question type: Maintenance & Repair

While accelerating (merging onto interstate, passing, etc.) inside windshield fogs up. Heat comes from dashboard ducts. Also, A/C and defrost work, but cut off as well during acceleration. Possible Causes?

1 Answer
485

Julian answered 11 years ago

sounds like the heater core has a leak to me. its not too bad of a job on box body panther cars.

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