i have a 2001 cavalier z24 and the windows frost up on the inside all the time. anybody know why this might be happening.

thanks

It's called lots of moisture inside the car. It could probably use a longer drive with the heat cranked to help dry it out. A lot can get dragged in on your feet and build up - or you may have a water leak somewhere adding to the problem.
It's helpful to open your window about an inch until the car is warmed up enough to get some heat onto the glass. This will help the moisture from your breath to get out of the car, and not stick to the cold windows. I find this particularly necessary when I have more than just myself in the car. The colder it gets, the more important it is to do this. It's nice to feel warmer with the window closed, but it's helpful to see as well.
You could of course start the car and let it sit there idling to warm up and help prevent the problem, but that's not exactly ideal. You're getting 0 MPG doing that, and because it's the SLOWEST way to warm the engine, that also means that emissions are at their worst under those conditions. It can also add extra fuel dilution to your oil.
Even on the coldest days we typically see here (about -25C at worst), I give my car about 2-3 minutes at a fast idle (around 1500RPM), and then just try to drive extra gently until I see the temperature gage start to move. That's usually when I turn the fan speed up and close my window, now that warmer air will be coming in.
If the windows seem to frost over after you park the car, then you definitely need to dry it out. Remove the floor mats and bring them inside if they're carpeted ones. Try to mop up the carpet with a towel (if it's not frozen). I've sometimes put a small electric heater inside the car overnight (running the cord carefully out the bottom of the door so it doesn't get pinched too badly) and left it on in there. I like to use one that's about 1,000 watts - enough to help dry things up, but not get too hot. Leaving a window cracked open may help at this time too, as long as it doesn't snow at the time. If you get rid of the source of the moisture, then you won't get the frost.

OK thanks alot for the help. im going to try that. winter gets pretty damn cold up here sometimes. i think the coldest day we got this year was like -47 with the windchill.

i actually had this problem in my 89 and my 96. i used one of those damp-away things, like you would put in a basement to draw out the moisture... worked famously.



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