Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Sign in using an external account
Register Forgot Password?
Register Search Today's Posts Mark Forums Read FAQ Vendor Directory
Search
C5 Tech
Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Sponsored by
Karl Chevrolet

Welcome to Corvetteforum.com!
Welcome to Corvetteforum.com.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Corvetteforum.com today!


Corvette Store
 
 
C7 Parts & Accessories
C6 Parts & Accessories
C5 Parts & Accessories
C4 Parts & Accessories
C3 Parts & Accessories
C2 Parts & Accessories
C1 Parts & Accessories
Wheels & Tires
Sponsored Ads
 
 
Vendor Directory
  
Reply
 
 
 
 
Thread Tools Search this Thread
Old 07-02-2003, 01:11 AM   #1
reyderz
CF Senior Member
 
reyderz's Avatar
 
Member Since: Jun 2002
Location: Arnold Ziffelville CA
Default My windshield keeps fogging up??????

Anyone know what causes this? Someone told me it's the heater core leaking into the airconditioning system.
reyderz is offline   Reply With Quote
Old 07-02-2003, 01:23 AM   #2
Scubanme
CF Senior Member
 
Scubanme's Avatar
 
Member Since: May 2003
Location: San Bruno Ca
Default Re: My windshield keeps fogging up?????? (reyderz86)

I don't know exactly how the ehater system works on the C-5s, but older fogged up when there is a leak in the heater core. Does it smell like antifreez in your car?

Scubanme is offline   Reply With Quote
Old 07-02-2003, 06:42 AM   #3
IMQUIK
CF Senior Member
 
IMQUIK's Avatar
 
Member Since: Mar 2002
Location: Kennesaw Ga
Default Re: My windshield keeps fogging up?????? (reyderz86)

Crack the window a bit when you are "Doing it" :jester
IMQUIK is offline   Reply With Quote
Old 07-02-2003, 08:25 AM   #4
rwj383
CF Senior Member
 
rwj383's Avatar
 
Member Since: Jan 2001
Location: Aloha, Oregon
Default Re: My windshield keeps fogging up?????? (reyderz86)

Quote:
Anyone know what causes this? Someone told me it's the heater core leaking into the airconditioning system.
This just happened to me about 2 months ago. Yup, it was the heater core. I hope you are still under warranty, too. Get this: the ENTIRE dash has to come out + the intake has to come off the engine + the cowl has to come off...many labor hours. Also, lets hope the mechanic at the dealer has done at least one before or he'll never get it back together right/tight. I dont mean to scare you, but, this was my reality when my core sprung its leak. Has yours totally sprung coolant all over your pass footwell yet?? When mine finally did, it soaked the PCM module and relay/fuse center behind the pass footwell. PLUS, it'll take years to get every bit of coolant out of the carpet. I still feel the slimey feeling to this day. I need to hit my carpets one more time with the carpet cleaner.
Good luck. I hope its not your core!
Robert Judd
rwj383 is offline   Reply With Quote
Old 07-02-2003, 09:21 AM   #5
Smoke-N-Shot
CF Senior Member
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In VI Veteran
 
Smoke-N-Shot's Avatar
 
Member Since: Jan 2000
Location: Lynnfield MA
Default Re: My windshield keeps fogging up?????? (reyderz86)

Heater core... :yesnod:
Smoke-N-Shot is offline   Reply With Quote
Old 07-02-2003, 09:28 AM   #6
Special K
CF Senior Member
 
Member Since: Jun 2003
Default Re: My windshield keeps fogging up?????? (reyderz86)

I agree it's probably the heater core. But I'm going to try and think a little more positive. It could also be moisture (condensation) in the ducts. If it's the heater core, you should be able to smell it. Do you notice a white discharge from the ducts especially when you first start the air? That would indicate moisture.

Bob
:flag
Special K is offline   Reply With Quote
Old 07-02-2003, 11:07 AM   #7
TheBigGuy
CF Senior Member
 
Member Since: May 2000
Location: Macomb Mi
Default Re: My windshield keeps fogging up?????? (Korreck)

I too had the same problem. Fortunately for me it was a bad " O " ring connection at the heater core. So they only had to pull the intake manifold to get to the problem. Hopefully your problem may be the same. Good Luck !
TheBigGuy is offline   Reply With Quote
Old 07-02-2003, 06:16 PM   #8
white93
CF Senior Member
 
Member Since: Oct 1999
Location: Raleigh NC
Default Re: My windshield keeps fogging up?????? (TheBigGuy)

My windshield fogs up on my '99, but only when the AC has been running for a while. It is not supposed to be routing cold air through the defroster onto the windshield as I have it set, but it seems that is what is happening. I assumed the glass was getting very cool and condensing the high humidity here in NC. The fogged area is immediately over the windshield ducts and doesn't spread too far. I couldn't see an obvious way to check the duct routing but maybe I should??? I don't smell coolant and coolant volume isn't decreasing, so I assumed it was an annoying air leak in the ductwork in the dash. Now I guess I'll worry a bit more and try to get to the ducts.
white93 is offline   Reply With Quote
Old 07-02-2003, 08:27 PM   #9
Cliff99C5hardtop
CF Senior Member
 
Cliff99C5hardtop's Avatar
 
Member Since: Oct 2000
Default Re: My windshield keeps fogging up?????? (white93)

My windshield fogs up too, but it's on the outside. My problem is when I installed my LS6 intake, I never made sure the vaccuum line on the back of the intake was on securely. My AC comes out all my vents at the same time!! I just have to get my lazy butt to do it.....Just hope it is not the heater, they are very difficult to do.
Cliff99C5hardtop is offline   Reply With Quote
Old 07-02-2003, 08:33 PM   #10
geck
CF Senior Member
 
geck's Avatar
 
Member Since: Jan 2001
Location: toms river, New Jersey,USA
Default Re: My windshield keeps fogging up?????? (Scubanme)

[QUOTE]I don't know exactly how the ehater system works on the C-5s, but older fogged up when there is a leak in the heater core. Does it smell like antifreez in your car?

:iagree:
geck is offline   Reply With Quote
Old 07-02-2003, 09:43 PM   #11
LoneStarFRC
CF Senior Member
St. Jude Donor '08-'09-'10-'11-'12-'13-'14
 
LoneStarFRC's Avatar
 
Member Since: May 2001
Location: "If you like your Constitution, you can keep your Constitution! Period!" And remember, the border is secure!
Default Re: My windshield keeps fogging up?????? (geck)

Quote:
I don't know exactly how the ehater system works on the C-5s, but older fogged up when there is a leak in the heater core. Does it smell like antifreez in your car?

:iagree:
:iagree: If you have coolant inside anywhere then I would agree on the heater core theory. If however, it's just water, then that by itself could just be the condensation drain tube clogged or partially clogged.
Mine will fog on high humidity situations with a cool outside air temperature if I keep it in recirc mode. When I switch to outside air mode, especially with the defrost selection, it clears up right away.

Robert
LoneStarFRC is offline   Reply With Quote
Old 07-02-2003, 10:18 PM   #12
John's vette
CF Senior Member
Cruise-In III Veteran
Cruise-In IV Veteran
 
John's vette's Avatar
 
Member Since: Oct 2001
Location: Official Misfit Cooler Owner
Default Re: My windshield keeps fogging up?????? (reyderz86)

Does your AC blow out of all vents? Mine fogs up and it is driven by a vacuum line being eaten by a leaky battery. The acid destroyed my vacuum line that controls which vent the AC comes from. I would look at that if you show no signs of coolant leaks.
John's vette is offline   Reply With Quote
Old 07-02-2003, 10:23 PM   #13
reyderz
CF Senior Member
 
reyderz's Avatar
 
Member Since: Jun 2002
Location: Arnold Ziffelville CA
Default Re: My windshield keeps fogging up?????? (reyderz86)

I don't smell anything. It takes a couple days to fog up and then I have to take a rag and wipe it off to get it so I can see good without other people headlights reflecting on it at night. I'll try to take a pic.
reyderz is offline   Reply With Quote
Old 07-02-2003, 10:23 PM
 
Go Back   Corvette Forum > C5 Corvettes, 1997 - 2004 > C5 Tech
Reload this Page My windshield keeps fogging up??????
 
 
 
Reply

Tags
86, air, c4, c5, car, conditioning, defroster, fog, fogged, fogging, fogs, high, humidity, windshield, working


Thread Tools Search this Thread
Search this Thread:

Click for Advanced Search

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 Off
Pingbacks are Off
Refbacks are Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Erase FortMorganAl Testing 0 05-08-2014 10:38 AM
))) Darby Malone C4s for Sale/Wanted 3 04-29-2014 07:37 PM
??? Yello95 Testing 0 02-20-2014 01:50 AM
Ouch grum C6 Corvette General Discussion 10 05-03-2013 08:43 PM


All times are GMT -4. The time now is 08:47 AM.


Emails & Password Backup