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Re: The inside of the car fogs up and on very cold...
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.
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a fix for this is to run the ac
this although make it cold removes the moisture from the air inside the car and reduces the fogging up
if you have climate control run it or if not run the heater at the same time to take the edge of the cold
The air conditioner works by removing water vapor from the air through a condensation process there by making the air feel cooler
that restricts the moisture available to fog up the windows
Summary: During the winter months, or even a freak spring storm, it isn't uncommon to find the windows of your car covered in ice. Deicing your windows can be a bitterly cold experience, so why not learn the best possible ways for both preventing ice from forming on your windows and removing it in a hurry when you need to. Here's how. I really don't like going outside every morning to deice my windows. If you live in cooler (or even colder) climates, then chances are pretty good that you know what I'm referring to.
Over the years I have tried many different methods for deicing windows. I discovered that some work (though at a risk) while others seem to work just fine at preventing ice from forming (what better way of deicing your windows-provided you remember to do it, and others work-but require you to get really cold. Here are some methods, and a brief description of what happened to me when I used them.
Defroster. Probably the most common method available. Unfortunately, this method also comes with risks. While a properly working defroster can quickly (no more than 20 minutes usually) remove icy build up, it can also worsen any preexisting cracks in your windshields if turned on too high. There is another drawback to this method, and that is its cost. You can't really run the defroster without turning on the engine, and that takes gasoline.
Scraper. The traditional method for removing ice from windshields, a scraper should be in every vehicle that is in a cold climate. In fact, many car rental companies include them in their cars when you rent a vehicle from them during the winter. On average, this method can take about as much time as the defroster method, and while you are not as likely to crack your windshield, you will most likely get cold.
Vinegar. One of the best ways for deicing your windshield and windows is to prevent the ice from forming at all. However, not everyone has a garage that they can store their car in. In those situations, it is best to use a 50/50 solution of vinegar and water. Use half vinegar (any kind, though I prefer white since it does not smell as much) and half water in a spray bottle and spray it on your windows at night. This helps prevent ice from forming. The only drawback is that you have to remember to use it at night, otherwise it doesn't do you very much good. Although you can still remove ice by spraying some on your windows in the morning, you'll just need a whole lot more.
Rubbing Alcohol. For those who really need to move, try putting about 5 tablespoons of rubbing alcohol into your windshield washer reservoir. This turns the regular windshield washer fluid into a deicing agent at a fraction of the cost, and works wonderfully. Simply spray and use your windshield wipers as normal.
Blanket. This is perhaps the easiest way to prevent ice build up on your windshield. Just place a blanket over your windshield at night, and remove it before driving anywhere.
You need to switch your air flow from recirculate...to out side input...the recirculate always fogs up when cold or wet outside...Hope this helps. Use the defrost mode...but be sure recirculate is off...
This is normal if your A/C doesn't work. When set on defrost the A/C kicks on and off to keep the fog from appearing. the fog goes away once the heat inside reaches a certain temperature. Unless the drain is clogged and the plenum is holding water. Do you have ice on the inside? clean the drain. It's on the passenger side, near the bottom of the firewall. A rubber tube coming out, that goes to nothing.
try running the ac as well as the heater. The ac removes the humidity (water vapour) in the air in the car which is causing the fogging up . Hot moist air on glass creates fog ( same as clouds). You will get a comfortable temperature inside without the fog
This may be due to a bad heater core or dirty core with a plugged water drain, first see if the a/c works. turn it on and see if the air gets cold and if the ac compressor works.
The way the defrost works to keep windows from fogging up is that when the front defroster is tuned on the ac should also be on, on most cars when you go to defrost it will turn ac on automatic. the system then uses hot and cold air to remove the moisture in the air to avoid window fogging. if your a/c is not working then that may cause window to fog, but if you are also getting a smell then the drain that lets out condensation may be plugged and then water builds up and also mold from always being wet and when heat is on you smell that.
i want you to run the defrost and when windows fog up wipe window with hand and see if it is greasy . if it feels oily then you may have a bad heater core, the core leaks coolant out and steam and causing windows to fog up with a flim of grease.
IN COLD WEATHER USE BI LEVEL AND TURN ON HEAT ON AC AND HEATER MODE SWITCH AND HEAT MODE THAT WILL KEEP WINDOWS FROM FOGGING UP KEEP CAR WARM ON THE INSIDE WHEN COLD OUT SIDE ALWAY CARRY PAPER TOWER OR SOME THING TO WIPE WINDOWS WHEN FOG UP MOST TIME I HAVE PROBLEM WINDOWS FOGGING UP WHEN YOU HAVE COLD RAIN OUT SIDE.IF WINDOWS FOG REALLY BAD I HAVE TO TURN MODE SWITCH TO COLD MODE AND TURN ON DEFOGGER.