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Windows Fogging Up Constantly

richzx

By richzx,
in Four Door Family & Wagoneers

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richzx Community Regular

richzx

Posted
Posted

I can't work out why my windscreen keeps fogging up. The car is garaged every night and it's not wet inside the car but when I arrive at my car at 5:30 at night the windscreen is fogged up. I know it's cold down here but I've never had a car that it happens to as regulalrly as this one. I tried some ani-fog treatment and it made a small difference but very little at all. Any suggestions as to why it's happening and how to stop it? Yes I know about warm air condensing on a cold window!

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Daleo Grand Master

Daleo

Posted
Posted

Do you run your aircon very much when you drive in winter?

Dehumidifying the interior using the aircon helps with windows fogging; as there will be minimal moisture to condense.

Other than that; maybe water from a blocked aircon drain or a leaky heater core might be dripping back inside the cabin.

RS4StagMan Rising Star

RS4StagMan

Posted
Posted

The other thing to try is thoroughly clean all the windows on the internal face, I use windex with newspaper, as it leaves a very clean streak free finish.

I have been using old newspaper for years to clean glass with flawless results, this was after my friend said to try it about 20 years ago. He had a 70's Falcon GT that he looked after meticulously.

Daleo Grand Master

Daleo

Posted
Posted

The other thing to try is thoroughly clean all the windows on the internal face, I use windex with newspaper, as it leaves a very clean streak free finish.

I have been using old newspaper for years to clean glass with flawless results, this was after my friend said to try it about 20 years ago. He had a 70's Falcon GT that he looked after meticulously.

This doesn't work as well as it used to, due to the fact that printers ink no longer contains carbon black.

The Carbon Back in the newsprint is what actually does the job; rather than the paper itself.

RS4StagMan Rising Star

RS4StagMan

Posted
Posted

This doesn't work as well as it used to, due to the fact that printers ink no longer contains carbon black.

The Carbon Back in the newsprint is what actually does the job; rather than the paper itself.

Yes, you are right. I still have a stash of old newspapers lying around for this purpose, newer newspapers would be better than nothing though.

Daleo Grand Master

Daleo

Posted
Posted

Yes, you are right. I still have a stash of old newspapers lying around for this purpose, newer newspapers would be better than nothing though.

Yeah, I abandoned newspaper a while back, and now I use a microfibre glass cloth; which is pretty damn good.

richzx Community Regular

richzx

Posted
  • Author
Posted

Sorry for late reply I ran out of internets. There is no leak in the cooling system etc. I have cleaned the windows a million times and it has no effect. If I run with the aircon then obviously it doesn't happen but generally I like to leave it off and this is the first car I've had where this is an issue. I guess I need to just keep running the aircon but I just find it starnge that it's the only car I've owned where this needs to be done. All good, it's merelu a first world problem.

Troppo Explorer

Troppo

Posted
Posted

Rich, mine does that too when its been cold and wet outside. Mine has twin sunroofs but is stored in a lockable carport not a garage. I just put the demister on and the A/C and it clears it up...

KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Pull the carpet back from the passenger footwell. Mine is wet and water collects under the passenger seat. The fact that the cooling system is not losing water leads me to believe that it is an exterior leak rather than the heater core... I'll have to find the drain from the sunroof(s) and the aircond to rule them out.

533 RYC Proficient

533 RYC

Posted
Posted

Yeah, I abandoned newspaper a while back, and now I use a microfibre glass cloth; which is pretty damn good.

Agreed Dale. I use CRC glass cleaner & white cotton rags. After years in the car industry, I found CRC to be the best! Also, to clean up old glass if CRC doesnt get it all out, Autoglym Glass Polish (available from autobahn). It's the only glass polish I've ever found, & my mum now only uses it on antique stuff she deals in................

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