Ive had the car for 2 years, never had a problem with ice getting on the inside of my windshield. It had a bad crack so I had to get a new windshield, had guys install it, now a good majority of nights and mornings theres fog/ice on the inside. What could be the problem? She was through alot worse winter last year than this year and only after this new windshield do i have problems

 

Somebody had probably put that no-fog stuff on it, like motorcycle guys use on their helmets

Get yourself some of that and try it

 

someone put no fog on the INSIDE of my old windshield and it lasted for a year and a half?
it's foggy, only after the icyness has started to melt, i want to prevent it from happening in the first place, i dont want the INSIDE of my windshield wet and sometimes dripping on my dash.

one thing i did notice is that most of the time, a majority of the windshield is iced, except two oval shaped spots right by where the two defrost/air vents are...

 

Right. Maybe longer. Maybe even ALOT longer.

Try it.

The 2 clear patches are where the slightly warm air from the heater core keep it from fogging.Right. That's where you put it. It won't keep the INSIDE from fogging if you put it on the OUTSIDE, for example.

It's also not impossible that the seal around the windshield leaks, and there's rainwater getting into the car. Needless to say, that would make it worse. Or, that your T-tops have started leaking, at about the same time that the windshield got changed.

See signature for details.

 

I would think that if it's a new windshield it wouldn't have "no-fog" on it. Sounds like you might have a water leak somewhere (windshield seal, heater core and etc.) that's making the moisture condense on the windshield.

 

Well a few things. First off, all this ice and water has left all kinds of ugly streaks and water spots in the windshield, so i windex'd it clean, does that take the antifog the windshield might have came with it off?

And, about those two vents, my heatercore is not working, hasn't worked, a combination of either clogged or that valve, and my vents don't really switch right, i think GM told me i had a bad actuator. needless to say, the heater core is not in the coolant loop anymore, i took that whole valve piece with the send and return lines out of the loop, goes past that straight to the radiator, so it cant be heat from the heater core.

 

So, how is the no-fog stuff working out for you, after you put it on your new windshield?

Have you checked for any leaks letting rainwater into the car?

 

you know...sometimes if your car gets moisture in it, the windows will fog up real easy...and me being on an island its not long before moisture gets in. what i do perodically is put a space heater in the car, roll down the drivers window and put a fan in which exhausts the hot air in the car to the outside. seal up around the fan so only the fan is moving air. after about 2 hours of that...all my windows are fog and moisture free and best of all, so are my seats

 

no leaks that i know of. What no fog-stuff? Windex? windex is just a window cleaner, im not sure if it's supposed to prevent fog?

 

No, Windex won't prevent fog.

I'm talking about the stuff that motorcycle riders, skiers, snowmobilers, and people doing stuff like that might use, where they are wearing helmets or goggles in very cold conditions such that their own breath or perspiration fogs up the inside.

I've even known people that use it on their bathroom mirror so they can shave right after a hot shower.

I seem to recall one brand that's something like C-clear. Check distributors for the above activities and see what you can come up with.

 

Rain-X makes an antifog that you can get at your local auto parts (pep boys) or retail store.

 

My brother inherited my grandma's old 71 Skylark, and he called it "the swamp" because so much moisture got inside that car from various places. During the really cold stretches of winter, he actually had to use an ice scraper on the inside of the windsheild! The heater system was dead in that car too. Changing the blower motor required removing the damn fender, so he just dressed really warm to drive it during the winter. The lack of a working heater makes it even worse trying to get the windsheild un-fogged. The root of your problem seems to be having the new windsheild put in though, which would make me think that they didn't get it sealed properly. You've probably got moisture getting in at the base where it meets the firewall, or maybe even somewhere along the top. I think I would start by going back to the glass shop and seeing if they'll re-seal it for you, or at least perform some kind of leak test on it if they can.

 

I agree with the interior moisture theory. Instead of $6.99 for some temporary anti-fog fix, a $19.99 heater core will permanently solve your windshield issue.