2000 Mercury Grand Marquis Ls
2 Answers
Replace the heater core , The fan a different problem
1 people found this helpful.
321JapCarExtrordinar... answered 5 years ago
If you don't need heat bypass the heater core, and the fan if you mean the air conditioning fan that blows air in the dash either it is bad or the blower motor resistor both located in the engine compartment behind the washer fluid bottle
1 people found this helpful.