Window fog problem

[Solo2guy]

I'm having an issue with the inside of my windsheild in my 96 Brighton wagon. While I understand that all vehicles fog up in cold weather, my BK seems abnormally bad.

Anytime it's a high humidity day/just below freezing, my windsheild fogs up badly on the inside and takes quite a bit of time to clear. Same if snow blows off the hood while I'm driving. Once the car is warm, the heater gives off good heat,but there is still a faint fogging in the upper corners.

I can't smell coolant, so I don't think it's the heater core. Is it possible that the fresh air intake is just a poor design?

[99SUS SFD]

Does you car have A/C?

[dodik]

make sure recirculate is not on when it starts to fog up.

[Huffer]

Go through 1-3-2-4's member rides 1 thread, you'll see a few pics where he cleared a bunch of leaves and crap from behind the glovebox in the air ventilation system. You'll want to check this as damp leaves or anything blocking the system will cause a delay in de-fogging.

Also make sure you have good window seals. Bad seals mean condensation can build up while the car is sitting.

[Solo2guy]

I don't have A/C, and the heater control is on "fresh air". Thanks though.

I went through 1-3-2-4's thread, I'll pull the glove box out tomorrow and have a look. Thanks for the input guys.

[ouch1011]

There is a rubber hose that runs from the evaporator/heater box out through the firewall. This is a drain for the heater box and it sometimes getss plugged and may cause this problem.

[1-3-2-4]

Your car has No A/C? hmm well the A/C acts like a dryer to help speed up the defrost time but do check that box.. I was amazed on how much crap was in that box...

[Soul Shinobi]

When was the last time you cleaned the inside of the window with glass cleaner? Than can make a BIG difference.

EDIT: I couldn't find where 1-3-2-4 took apart his air box, can someone link? Actually, I think this is it: viewtopic.php?f=8&t=14206 (http://www.sl-i.net/FORUM/viewtopic.php?f=8&t=14206)