Bad condensation, inside of windshield - Subaru Forester Owners Forum
Subaru Forester Forum
ebay search
Subaru Forester Forum
Go Back   Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Problems, Maintenance, and Warranty
SubaruForester.org is the premier Subaru Forester Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 12-28-2009, 12:53 PM   #1 (permalink)
Registered User
 
Straycatkid's Avatar
 
Join Date: Mar 2008
Posts: 401
Location: Long Island, NY
Car Year: 1998
Car Model: Forester L 5MT
Gallery: 0
Feedback Score: 2 reviews
Default Bad condensation, inside of windshield

Last winter I was getting really bad condensation on the inside of my windshield. Inside the car, the windshield would be completely covered with drops of water, and it was cold enough - the inside would freeze over. A few weeks ago, I had it replaced. I had a rock chip that I got to use as an excuse and my insurance company picked up the tab. The installers told me if there's any sort of leaks, they guarantee the seal.

I got in the car last night, and again I have a windshield completely covered with moisture. This morning there was enough near the top edge, that there were two or three drops sliding down in front of me. Annoys the crap out of me that this is happening.

Is this again a shotty windshield installation job? Or is it something else, window seals? It's too cold right now to apply Fog-Ex, has to be put on to warmer glass if I'm not mistaken. If this sounds like another leak, I'll be on the phone with the installer so they can repair/replace it. Again.

Thanks, everyone.
__________________
'98 SF L, 5MT.
Straycatkid is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-28-2009, 01:24 PM   #2 (permalink)
has awakened!
Lifetime Supporting Member
 
2.5x_sleeper's Avatar
 
Join Date: Aug 2007
Posts: 19,046
Location: Newberg, OR
Car Year: 2007
Car Model: Forester Sports XT
Transmission: 4EAT
Gallery: 0
Feedback Score: 37 reviews
Default

If you have excessive moisture inside your Forester, it's not unusual for the temperature difference (inside to outside) to cause this kind of problem.

As to if the excessive moisture is from a leak or what's tracked in, I can't tell from here.

Bobby...

My MODding Journal
__________________
'07 FSXT - COBB Surgeline dyno Protune - Stage 1+
'03 X +AVO turbo kit = XT (son's)
'95 Neon Sport
2.5x_sleeper is offline   Reply With Quote
Old 12-28-2009, 01:50 PM   #3 (permalink)
Forum Member
 
AlleyCat's Avatar
 
Join Date: Feb 2009
Posts: 1,372
Location: New Hampshire, U.S.A
Car Year: 2011
Car Model: Forester X
Transmission: 5-Gear Manual
Gallery: 0
Feedback Score: 0 reviews
Default

Usually snow or water in the car from being tracked in or bellypan plugs popped out. Check under floor mats for moisture. XS Moisture in the car will condense on the WS and sidelights. If nothing excessive on the carpeting in the car then maybe a heater core coolant leak. Do you have a funny sweet smell too?
AlleyCat is offline   Reply With Quote
Old 12-28-2009, 02:05 PM   #4 (permalink)
Registered User
Thread Starter
 
Straycatkid's Avatar
 
Join Date: Mar 2008
Posts: 401
Location: Long Island, NY
Car Year: 1998
Car Model: Forester L 5MT
Gallery: 0
Feedback Score: 2 reviews
Default

Funny you should mention a coolant leak smell, AlleyCat. This issue has been going on for a while, but the last two days I have been smelling what may very well be coolant coming through my vents when I turn them on all the way. I noticed it pretty strongly today as I blasted the defroster. If it was a heater core leak, would it make more sense for moisture on the WS to gather near the bottom? I've got it all over. Not so much on the sides, but definitely the top and the base. As far as moisture on the floor mats, there will definitely be some. I'll take care of that, I've got rubber Husky Liners in there that I can remove and clean off.

Geez, hope it's not the heater core.
__________________
'98 SF L, 5MT.
Straycatkid is offline   Reply With Quote
Old 12-28-2009, 02:20 PM   #5 (permalink)
The Modfather
 
Peaty's Avatar
 
Join Date: Jan 2006
Posts: 7,213
Location: Lawrence, KS - Rock Chalk
Car Year: 2010
Car Model: Legacy 3.6R Limited
Transmission: 5EAT
Gallery: 0
Feedback Score: 9 reviews
Default

Do you have the HVAC set to recirc or outside air. If you don't have outside fresh air coming in your breath and whatever moisture in the car will not be removed. Running the AC will remove the condensation too but you must be on fresh air. A dead giveaway for a heater core issue is a sweet smell not unlike say maple syrup, also the moisture will not wipe away but it will be greasy and almost impossible to wipe off.

More info here:

http://www.scoobymods.com/foggy_inte...61.html?t=4361
__________________
Peaty

2010 Legacy 3.6 R - Limited

2013 Outback - Premium

1999 Miata - MX5
Peaty is offline   Reply With Quote
Old 12-28-2009, 02:55 PM   #6 (permalink)
Registered User
Thread Starter
 
Straycatkid's Avatar
 
Join Date: Mar 2008
Posts: 401
Location: Long Island, NY
Car Year: 1998
Car Model: Forester L 5MT
Gallery: 0
Feedback Score: 2 reviews
Default

I do have it on the fresh air setting, which is effective. It takes a few minutes to clear the windshield completely but it works ok. No greasiness or anything once it's cleared.
__________________
'98 SF L, 5MT.
Straycatkid is offline   Reply With Quote
Old 12-28-2009, 05:17 PM   #7 (permalink)
The Modfather
 
Peaty's Avatar
 
Join Date: Jan 2006
Posts: 7,213
Location: Lawrence, KS - Rock Chalk
Car Year: 2010
Car Model: Legacy 3.6R Limited
Transmission: 5EAT
Gallery: 0
Feedback Score: 9 reviews
Default

Do you think you have a cabin air filter? I wonder if you do and it's dirty and making the HVAC system not work as well as it could? Just a thought.
__________________
Peaty

2010 Legacy 3.6 R - Limited

2013 Outback - Premium

1999 Miata - MX5
Peaty is offline   Reply With Quote
Old 12-28-2009, 05:56 PM   #8 (permalink)
Registered User
Thread Starter
 
Straycatkid's Avatar
 
Join Date: Mar 2008
Posts: 401
Location: Long Island, NY
Car Year: 1998
Car Model: Forester L 5MT
Gallery: 0
Feedback Score: 2 reviews
Default

Did a quick search, seems there is a cabin filter in the SF, sort of behind the glove box actually. Certainly worth a look, I doubt it's ever been taken out.
__________________
'98 SF L, 5MT.
Straycatkid is offline   Reply With Quote
Old 12-28-2009, 09:53 PM   #9 (permalink)
has awakened!
Lifetime Supporting Member
 
2.5x_sleeper's Avatar
 
Join Date: Aug 2007
Posts: 19,046
Location: Newberg, OR
Car Year: 2007
Car Model: Forester Sports XT
Transmission: 4EAT
Gallery: 0
Feedback Score: 37 reviews
Default

If you have a cabin filter that hasn't been changed, that would explain reduced air flow! After 2 years, the cabin filter in my '07 looked like this!

Still, I'm not sure how a plugged cabin filter would cause condensation? I can see it taking longer to clear it if the air flow was reduced.

Bobby...

My MODding Journal
__________________
'07 FSXT - COBB Surgeline dyno Protune - Stage 1+
'03 X +AVO turbo kit = XT (son's)
'95 Neon Sport
2.5x_sleeper is offline   Reply With Quote
Old 12-29-2009, 06:34 AM   #10 (permalink)
The Modfather
 
Peaty's Avatar
 
Join Date: Jan 2006
Posts: 7,213
Location: Lawrence, KS - Rock Chalk
Car Year: 2010
Car Model: Legacy 3.6R Limited
Transmission: 5EAT
Gallery: 0
Feedback Score: 9 reviews
Default

reduced airflow would explain the reason it takes so much time to clear maybe. Simple to check and remove. Just bend down in the passengers foot well and look up. There will be a little hatch that's about 6 - 7 long and about an inch wide held in place by one screw and a tab on the other side. If that's there just remove the filter for now.

Look here for a scan of the install manual:

http://www.scoobymods.com/air_filtra...156.html?t=156
__________________
Peaty

2010 Legacy 3.6 R - Limited

2013 Outback - Premium

1999 Miata - MX5
Peaty is offline   Reply With Quote
Old 12-29-2009, 07:48 AM   #11 (permalink)
Registered User
Thread Starter
 
Straycatkid's Avatar
 
Join Date: Mar 2008
Posts: 401
Location: Long Island, NY
Car Year: 1998
Car Model: Forester L 5MT
Gallery: 0
Feedback Score: 2 reviews
Default

Thanks for all the feedback, guys. I'll take a look at that filter tonight after work.
__________________
'98 SF L, 5MT.
Straycatkid is offline   Reply With Quote
Old 10-15-2013, 10:28 AM   #12 (permalink)
Forum Member
 
Join Date: Sep 2013
Posts: 2
Location: SW Colorado
Car Year: 2005
Car Model: Forester 2.5x
Transmission: 5 speed manual
Gallery: 0
Feedback Score: 0 reviews
Default How did you achieve success?

I know this is an old post, but I'm experiencing the same issue. It's now becoming cold and snowy out here in CO and my new-to-me 05 forester 2.5x is getting some serious condensation build up on the inside of my windshield and rear window. Incredibly frustrating to me.
Did you solve your problem? How? Any info would be much appreciated.
Thanks,
Dylan
Dylfoot is offline   Reply With Quote
Old 10-15-2013, 11:38 AM   #13 (permalink)
Forum Member
 
sahunt's Avatar
 
Join Date: Jan 2006
Posts: 1,167
Location: Cambridge, UK
Car Year: 2005
Car Model: XT
Transmission: AT
Gallery: 0
Feedback Score: 0 reviews
Default

Check if you have a soaking wet carpet due to a water leak. This has invariably been the cause of persistent windshield misting for me.

-- Steve

Sent from AutoGuide.com Free App
__________________
MY2005 2.0 XT, 4EAT
MY2003 Seat Leon Cupra, 6MT
sahunt is offline   Reply With Quote
Old 10-15-2013, 03:04 PM   #14 (permalink)
Forum Member
 
Join Date: May 2013
Posts: 118
Location: SW MO
Car Year: 1999
Car Model: Forester
Transmission: auto
Gallery: 0
Feedback Score: 0 reviews
Default

Over the years, the cars that have done this had leaks in the heater core or the attached hoses at the connection, had water leaks into the interior, or had too much buildup of snow or water from the environment - like, I left the windows down.

Another source is the cowl plenum - too many leaves sift in and block the drain holes, which then causes water to back up into the heater plenum where it usually finds a way out, same as coolant. I think the designers deliberately leave an egress route for coolant to drip onto the floorboard so we can get a clue. Backed up water takes the same route.

Cold air from the a/c is dryer and removes the windshield condensation, but parking in broad daylight with the windows cracked dries it out. If there has been a long period of bad weather, it's a lot harder to dry out. At that point a windshield cover is a good idea to block water from getting into the plenum. It's also a lot easier to clean snow or frost.
tirod is offline   Reply With Quote
Old 10-15-2013, 11:35 PM   #15 (permalink)
Forum Member
 
sahunt's Avatar
 
Join Date: Jan 2006
Posts: 1,167
Location: Cambridge, UK
Car Year: 2005
Car Model: XT
Transmission: AT
Gallery: 0
Feedback Score: 0 reviews
Default

And of course if you use a sponge or rag to wipe off the condesation, take it out of the car and dry it some place else. If you leave it in the car to dry then all that water just re-attaches itself to the windshield and you are back to square 1.

Sorry if that is stating the obvious but it took me years to work that out...

-- Steve
__________________
MY2005 2.0 XT, 4EAT
MY2003 Seat Leon Cupra, 6MT
sahunt is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  Subaru Forester Owners Forum > Technical Forums and Vehicle Assistance > Problems, Maintenance, and Warranty

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -8. The time now is 10:15 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0