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10-17-2007, 03:57 PM
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#1
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I take pictures
Join Date: Mar 2006
Location: Montreal
Posts: 227
Car: 2009 328i
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Serious fogging issues
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?
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10-17-2007, 06:28 PM
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#2
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wouldu like some tinfoil?
Join Date: Apr 2005
Location: in your attic!
Posts: 4,670
Car: E36-M42, ej22t
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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!
__________________

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10-17-2007, 07:04 PM
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#3
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I take pictures
Join Date: Mar 2006
Location: Montreal
Posts: 227
Car: 2009 328i
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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.
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10-17-2007, 07:31 PM
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#4
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6th Gear Member
Join Date: Nov 2006
Location: Ottawa
Posts: 1,838
Car: '00 540i
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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.
__________________
93 325is - sold!
2000 540ia- sold!
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10-17-2007, 08:39 PM
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#5
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I take pictures
Join Date: Mar 2006
Location: Montreal
Posts: 227
Car: 2009 328i
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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?
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10-17-2007, 10:32 PM
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#6
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6th Gear Member
Join Date: Nov 2006
Location: Ottawa
Posts: 1,838
Car: '00 540i
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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...
__________________
93 325is - sold!
2000 540ia- sold!
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10-19-2007, 12:07 AM
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#7
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I take pictures
Join Date: Mar 2006
Location: Montreal
Posts: 227
Car: 2009 328i
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Thanks. I'll get it checked out.
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10-19-2007, 10:04 AM
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#8
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Addict
Join Date: Jun 2004
Location: Buckingham
Posts: 2,251
Car: 97 318 IS
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Could also be a blcked drain for the AC drip pan overflow.
That would hold alot of moisture.
__________________
"They say ignorance is bliss..... I don't know what the Fu*k that means but I'm pretty happy". Ricky Trailer Park Boys.

Current Mods....X-Brace, Stromung Cat Back Exhaust, 17/225/45 M3 Replicas, HotBits Adjustable Coil Overs, 40% LSD 3:91 Diff, E30 Gearbox, Boosted.
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10-19-2007, 09:56 PM
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#9
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5th Gear Member
Join Date: Feb 2005
Location: Montreal
Posts: 913
Car: E36, E46
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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.
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10-20-2007, 02:30 AM
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#10
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wouldu like some tinfoil?
Join Date: Apr 2005
Location: in your attic!
Posts: 4,670
Car: E36-M42, ej22t
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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.
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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
__________________

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10-22-2007, 12:48 PM
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#11
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3rd Gear Member
Join Date: Jun 2007
Location: Boston
Posts: 507
Car: 1993 325is
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wet carpets for sure
dude, check for wet carpets, i had the same thing, fogs up all around if you get your carpets wet
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