2000 Mercury Sable Q&A
2000 Mercury Sable Question: The heater blows great, but cold air, no leak in the floor, new thermostat.
The heating and ventilation draws its air from the area at the bottom of the windscreen/wiper panel area, make sure leaves and debris are cleared from this area. I have had to remove the fan blower motor on several cars and remove a "nest" created by rodents in the heater ducts. Not sure if your car has a cabin air filter if so probably located behind the glove box, perhaps its restricted. - patrick mannion