Serious fogging issues

kuds · 10-17-2007, 04:57 PM

So it's been getting colder these days, and all my windows seem to be fogging a hole lot than usual. I was on a mini road trip yesterday, and tried blasting the heat, than the cold, nothing seemed to be really doing the trick. Is there a problem somewhere? What's the best solution?

bmdbley'sBro · 10-17-2007, 07:28 PM

what year is it? on the early e36's there was a manual switch for outside vent/ or heat

...it could also be your heater core on its way out!

kuds · 10-17-2007, 08:04 PM

It's a 94 325is. Would the heater core also cause a lot of heat to come into the car? During the summer, i had a lot coming in from below the steering wheel and shifter boot.

carjoe · 10-17-2007, 08:31 PM

If you had a heater core leak, you would have more moisture but it would smell sweet.

My guess is the recirc button. The light bulb could be burnt out.

kuds · 10-17-2007, 09:39 PM

Hmm, come to think of it, there is a smell that comes out when I turn on the heat. Not sweet for my taste buds, but some might call it that.. So heater core? Why would it cause so much moisture?

carjoe · 10-17-2007, 11:32 PM

The fog is the moisture from the coolant.

Yeah, a cracked heater core would give you these symptoms. If it is the heater core, that would really, really suck. It's buried in the dash and is a real PITA to get at.

The real way to check is to get the cooling system pressure tested and if it holds pressure, you're golden and it's something else...

kuds · 10-19-2007, 01:07 AM

Thanks. I'll get it checked out.

jeffrie · 10-19-2007, 11:04 AM

Could also be a blcked drain for the AC drip pan overflow.
That would hold alot of moisture.

Karim@Corner73 · 10-19-2007, 10:56 PM

Hey Dan,

The most common reason I have seen for fogging is having wet carpets.
Check your carpets (front and rear). If they are wet, you need to find out why. There could be leaks in several places.

Karim.

bmdbley'sBro · 10-20-2007, 03:30 AM

Quote:

Originally Posted by Karim@Corner73

Hey Dan,

The most common reason I have seen for fogging is having wet carpets.
Check your carpets (front and rear). If they are wet, you need to find out why. There could be leaks in several places.

Karim.

thats a Good point he said 'all his windows' not just his windshield..
if it were Just the windshield its more likey its the h-core.

but if the whole cars moist..sunroof, floor drain plug, firewall plug, ac, tail light seal even

Mickey Knox · 10-22-2007, 01:48 PM

dude, check for wet carpets, i had the same thing, fogs up all around if you get your carpets wet