Mercury Grand Marquis Problem Report
Mercury Grand Marquis Engine May Overheat at Idle With AC On
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.
Replace engine cooling fan - Visitor
The engine may overheat at idle when the AC is on. A new, upgraded fan motor and resistor assembly should be put in. - Visitor
MY 2004 Mercury Grand Marque over heated in June while I was waiting on a red light to change, dumping all fluid and stranding me. I waited 2-weeks for my son to check out the car and he changed the thermostat and I drove it to the doctor next day and it over heated again. We added more antifreeze and I have not had that problem since, just a new host of problems. The A/C will only flow hot air, the passenger window if, I put it down it can only be put back up by force, the door can not be locked with the remote, I purchased a inside window washer and the long handle makes it easy to lock the door. My headlights went out and I also received the recall letter in April about that problem, the headlight problem did not occur till early on a very dark November morning when I was on my way to take my sister, for surgery, to the hospital. My car is now at the dealership for all electrical problems to be fixed and I understand the headlight part my not be available for months. Happy days are ahead. - DEE TX
Blowing hot air when idling or car was stationary. Drove it 15-20 miles....turned car off...started it up right away and the car made a strange sound and dumped contents of radiator....overheated. Dealership replaced fan and module $1000. - Philip Fick
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