Engine May Overheat at Idle With AC On on Mercury Grand Marquis

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.

RepairPal Verified
Average mileage: 67,154 (23,000–110,000)
6 model years affected: 1998, 2004, 2007, 2008, more2009, 2010
10 people reported this problem
4 people shared problem details
Replace engine cooling fan
1 person likes thisFlag inappropiate
The engine may overheat at idle when the AC is on. A new, upgraded fan motor and resistor assembly should be put in.
1 person likes thisFlag inappropiate
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.
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.
Related Items:
My ac system blows only hot air and it is fullly charged is this a control switch or sensor pro...
My 1993 started having AC problems shortly after a recharge. I noticed a burning smell as I ca...
i have problem with A/C..when i accelerate its air come from Defog area or Foot area..also when...
If you experience difficulty starting the engine when cold, stalling at idle, or hesitations du...

Related Content