Car Problem Reports

Mercury Grand Marquis Engine May Overheat at Idle With AC On

Mercury Grand Marquis Problem
9 Reports
Me Too

Model Years Affected: 1998, 2007, 2008, 2009, 2010

Average Mileage: 66,442 mi (23,000 mi - 110,000 mi)


The engine may overheat at idle when the AC is on. A new, upgraded fan motor and resistor may be required to correct this concern.

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