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David Morin (Sporin)
Member
Username: Sporin

Post Number: 101
Registered: 02-2003
Posted on Friday, December 19, 2003 - 08:25 am:   Edit Post Delete Post Print Post

Other then the obvious full defrost/full heat/fan high set up, does anyone have any tips on getting my inside windows to stay un-foggy?

I manage to keep the front windshield pretty much clear, but often at the expense of cold feet.

However my side windows get foggy and stay foggy.

I seem to have plenty of air flowing through the defrost vents ont eh dash, and th enotches aimed at the side windows.

recent heater core and everything seems to me 100% mechanically.

Am I missing something or si this just one of those things I'll need to live with?

Thanks,
Dave
'88 RRC
 

james (Check38)
New Member
Username: Check38

Post Number: 20
Registered: 10-2003
Posted on Friday, December 19, 2003 - 09:17 am:   Edit Post Delete Post Print Post

Make sure the air recycle button is set in the position that allows air to come in from the outside. If it is recycling the air inside, it can make the windows fog as well.
 

Tim (Snowman)
Senior Member
Username: Snowman

Post Number: 612
Registered: 12-2002
Posted on Friday, December 19, 2003 - 09:19 am:   Edit Post Delete Post Print Post

David-

I am in VT also and have the same problem. I find the RRC controls to be a bit overkill with all their different settings. Right now I just blast the defrost and turn it down every once in a while because the noise is a bit much. I have yet to find the right setting that works well. Maybe there is a magic potion that could be sprayed on the inside of the windows? Just kidding of course .


Tim H.
VT
 

John Cinquegrana (Johnc)
Senior Member
Username: Johnc

Post Number: 550
Registered: 07-2002
Posted on Friday, December 19, 2003 - 09:24 am:   Edit Post Delete Post Print Post

Someone told me that the problem might be a hole somewhere on the floorboard or in the firewall that causes the inside windows to get foggy. What do you guys think, could this be the problem? Just a thought...

John C.
 

Tim (Snowman)
Senior Member
Username: Snowman

Post Number: 613
Registered: 12-2002
Posted on Friday, December 19, 2003 - 09:28 am:   Edit Post Delete Post Print Post

MMMMM...I have no holes in my truck from rust. Maybe a firewall plug missing, I'll check.


Tim H.
VT
 

David Morin (Sporin)
Member
Username: Sporin

Post Number: 102
Registered: 02-2003
Posted on Friday, December 19, 2003 - 09:37 am:   Edit Post Delete Post Print Post

Good idea, I checked that and it is set right.

I combat this in my newish Mazda by running the AC at the same time to dry the air. Unfortunately, I can't seem to figure out how to get my RRC to do that.
 

Jaime (Blueboy)
Senior Member
Username: Blueboy

Post Number: 842
Registered: 02-2002
Posted on Friday, December 19, 2003 - 10:04 am:   Edit Post Delete Post Print Post

we have the same problem which is magnified by having 2 Labs breathing hot air in the back.

on the 93 RR there is a weird setting where the A/C is on and warm air is also circulated. as both RRs are at the "ECR spa" as my wife calls Mike's shop, I can't check what it is. it does work though to clear out all the windows especially with the fan on high.

Jaime x
 

Tim (Snowman)
Senior Member
Username: Snowman

Post Number: 614
Registered: 12-2002
Posted on Friday, December 19, 2003 - 10:16 am:   Edit Post Delete Post Print Post

Jamie-

You mean the A/C compressor is on. I thought this was to keep it lubricated during the winter months when the cold setting is never used. I do that periodically with all my cars in the winter. I have never seen a specific setting with the A/C for use with heat. Nice dancing Santa!
 

David Morin (Sporin)
Member
Username: Sporin

Post Number: 103
Registered: 02-2003
Posted on Friday, December 19, 2003 - 10:30 am:   Edit Post Delete Post Print Post

Most newer cars, including my 02 Protege5, automatically run the AC compressor whenever the HV system is turned to the defrost setting.

AC dehumidifies the air (cold or warm) and keeps interior fogging to a minimum. On my RRC, the AC is only engaged by the slider lever which seems to only push AC'd air through the dash vents, not onto the windshield. I can't find a way to engage the AC compressor while simultaneously using the defrost.

There are a few different anti-fog products that you can apply to your interior windows, but I've never been a fan of those coatings, but maybe I'll try one.

http://store.yahoo.com/rodi/chrx21112.html
http://www.thepurplestuff.com/
http://www.safetycentral.com/fogfreanglas.html
http://www.biokleen.com/store.cfm/biodegradable/action=details/CatID=6/ID=193
http://www.preparedness.com/fogfreanglas.html
http://www.amazing-solutions.com/anti-fog.html
 

Rob Davison (Nosivad_bor)
Dweb Lounge Member
Username: Nosivad_bor

Post Number: 1357
Registered: 02-2003
Posted on Friday, December 19, 2003 - 12:32 pm:   Edit Post Delete Post Print Post

you are correct David Morin,
last year i wondered if there was a way to get heat to come out of the dash vents. after looking at the factory manuals and things i discovered that the duct work is completely seperate for heat and air conditioning.

i now wear gloves in the car while my feat roast.

my car has water leaking in everywhere including a heater core.

my methode is to get the car very warm inside and roll down all the windows to purge the humid air.



rd
 

David Morin (Sporin)
Member
Username: Sporin

Post Number: 104
Registered: 02-2003
Posted on Friday, December 19, 2003 - 01:39 pm:   Edit Post Delete Post Print Post

While at the auto parts store to buy more antifreeze (she leaks a tiny bit) I picked up a can of those read-glass wipes that come in a wet roll inside a plastic tub. These are made by Prestone and claim to have anti-fog stuff involved as well.

Washed my 2 front side windows down with it and will evaluate tonight on the ride home.

{shrug}
 

Jaime (Blueboy)
Senior Member
Username: Blueboy

Post Number: 845
Registered: 02-2002
Posted on Friday, December 19, 2003 - 04:29 pm:   Edit Post Delete Post Print Post

Tim,

Yes, the compressor is on as well as heat coming out of the floor ducts if I remember right.

It didn't get cold enough here before the Rovers left so its from memory which is a scary thought. Pretty sure its the blue symbol that does this. It's written in the manual and I never tried before I couldn't see a damn thing out the one day. It is a strange combination, yet, it works. Not right away, yet, slowly the moisture leaves the windows and then stays clear.

Jaime x
 

yann ammann (Flip)
New Member
Username: Flip

Post Number: 1
Registered: 12-2003
Posted on Sunday, December 21, 2003 - 01:53 am:   Edit Post Delete Post Print Post

Maybe this can work for you. I bought two 12v computer boxer type fans (aprox 2" x 2" x 1"deep). Pretty silent too. Used old cellular cigarette plug and ran wires up inside dash-A pillar-roof lining exiting at rear passenger grab handle. Fans use rear bolt of two fixing The (holy jesus) bar plus a mounting arm(made my prototype with that plumbers metal strap used to suspend pipes)

Once the heat is going and those fans blasting it on the windows... I aim the fans down and almost towards rear window. 5 minutes tops and the coast is clear.

Tried and tested in -50 windchill snow/rain hellbreak loose weather. My 80RR doesnt even have those defrost wires in the windshield and side windows and AC is like yours.

good luck
 

Jason Michaels (H2eater)
Senior Member
Username: H2eater

Post Number: 257
Registered: 03-2003
Posted on Sunday, December 21, 2003 - 06:36 pm:   Edit Post Delete Post Print Post

yann,

Could you post some pics of this install?
 

Rob Davison (Nosivad_bor)
Dweb Lounge Member
Username: Nosivad_bor

Post Number: 1366
Registered: 02-2003
Posted on Sunday, December 21, 2003 - 09:43 pm:   Edit Post Delete Post Print Post

the answer is staring us in the face! i forgot all about this and it's clear now why it is there.

i bet all of us have hte heated windshield installed and it seems that all of us have ones that are not working any longer! this would clearly solve the problem of fog on the windshield.

so i think the question is how can i get my heated windshield working again!

dave, who started the thread. that 1988 that doesnt have this heated windshield, maybe look into getting a used one and makeing it work

rob
 

David Morin (Sporin)
Member
Username: Sporin

Post Number: 105
Registered: 02-2003
Posted on Monday, December 22, 2003 - 08:43 am:   Edit Post Delete Post Print Post

I've thought ot upgrading to the heated windscreen, but it's really the sides that are the problem. The defroster works ok on the front.

Anti-fog glass cleaner seems to be useless. Going to try another brand.
 

John Cinquegrana (Johnc)
Senior Member
Username: Johnc

Post Number: 553
Registered: 07-2002
Posted on Monday, December 22, 2003 - 11:28 am:   Edit Post Delete Post Print Post

"However my side windows get foggy and stay foggy."

I don't think a heated windshield will help here...

I doubt your 88 doesn't have some rust under the carpets somwhere....unless you live in a very warm and dry climate.

 

David Morin (Sporin)
Member
Username: Sporin

Post Number: 107
Registered: 02-2003
Posted on Monday, December 22, 2003 - 12:10 pm:   Edit Post Delete Post Print Post

I'm sure it does, though no holes. Does that have something to do with the added humidity?
 

David Morin (Sporin)
Member
Username: Sporin

Post Number: 131
Registered: 02-2003
Posted on Friday, January 23, 2004 - 08:24 am:   Edit Post Delete Post Print Post

Well, after a month or so of trying, it's still happening. On very long trips, I have good luck with getting the car very hot, then stopping and drying all the windows. Then it seems to stay fog-free for the rest of the trip.

However, on short trips (20 miles or less) to and from work, it get's foggy and stays that way. Even if I wipe the window down, it fogs right back up.

It's starting to creep onto my frnt windsheild as well... grrrrr..

I think I've got moisture coming in somewhere, plus there is a fair amount of wet in/on the mats. Going to try putting those in the dryer this weekend.

Time to start trying some of those glass treatments I listed above I guess.

-Dave
 

David Morin (Sporin)
Member
Username: Sporin

Post Number: 132
Registered: 02-2003
Posted on Monday, January 26, 2004 - 08:35 am:   Edit Post Delete Post Print Post

Did some digging around in the dash on Saturday. Popped off the 4 round vents on the dash and confirmed that everything is hooked up correctly.

Noticed that the vents on the side have 1 side blocked off, I'm assuming that is to direct more air up at the front glass. It doesn't seem to work though as much LESS air comes out then with the them off. Popped off the little plates and will try it for a while that way.

A short trip Saturday showed no difference in the fogging up of the side windows, and the windshield isn't any better or worse.

Also duct taped over the AC vents as there was quite a bit of air leaking in there. Really ugly, but perhaps it will stop some of the outside moisture from coming in. I can do that a lot neater next fall with squares of foam and plastic hidden behind the grills(vents) but this will have to do for now.

Ordered one of those anti-fog sprays above and hope to try that out soon. :-)

If none of that works, then I'[ll be trying out Flip's 12v fan setup.
 

Darren Ohara (Ronin)
New Member
Username: Ronin

Post Number: 5
Registered: 12-2003
Posted on Monday, January 26, 2004 - 11:06 am:   Edit Post Delete Post Print Post

David - This may sound stupid, but are your windows completely clean. Not only moisture, but possibly coolant from the heater core replacement can cause the fogging. I had this problem with one of my Volvos and it turned out to be a heater leak that was misting coolant on the windows. They would fog up real fast.

I don't have any problems with my '93 LWB, but since the Volvos days I tend to keep my windows very clean inside. Just a thought and you may have already done this.
 

David Morin (Sporin)
Member
Username: Sporin

Post Number: 133
Registered: 02-2003
Posted on Monday, January 26, 2004 - 12:37 pm:   Edit Post Delete Post Print Post

hmmm good thought,. I know the HC was replaced by the PO, but I'm not positive how long ago.

I have done the windows with my patented distilled water/iso-alcohol solution. Maybe I need to get something stronger on there.

Thanks for the tip. :-)

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