I just cant seem to keep the windows from fogging and I have the defroster on hi. It's a 91 lincoln town car signiture. Any suggestions that might fix this problem. D I need to replace the heater core?
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The Lincoln has a cabin air filter which filters outside air. It is probably plugged therefore the heater can only recirculate the the air inside the car. The results are windshield may clear but most other windows away from the heat stay fogged up.
Try changing the cabin air filter and see if it helps a great deal.
This can be caused by a heater core that is leaking inside the car, one way to determine if that's the problem, is if you can smell antifreeze. It is a 'sweet' smell, and is quite noticeable. If u don't notice this, I have to say this is a common problem w/ Hondas. I've had a civic, 2 accords (currently have a 92), and 2 Preludes, they are great cars, but they all suffer from fogged up windows in cold weather. One reason is that they are quite air tight, and the older models don't have the greatest defroster system (weak). Try and keep a window cracked open slightly, see if that helps.