C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Need Help, Ideas, Have an annoying problem.

Thread Tools
 
Search this Thread
 
Old Feb 6, 2002 | 06:45 PM
  #1  
Wheelman's Avatar
Wheelman
Thread Starter
Le Mans Master
20 Year Member
 
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Default Need Help, Ideas, Have an annoying problem.

When im driving lately ive been getting this misty coolant smelling air coming into my car from the space inbetween the dash pad and the crash pad. I cant figure out what it is or where its coming from......I checked my coolant level a few days ago, and it was a little low, so i filled the rest with water, and since then it has been fine. Havent noticed my car getting hot or anything, but then again it is 40 degrees outside.
Reply
Old Feb 6, 2002 | 07:06 PM
  #2  
85vetteguy's Avatar
85vetteguy
Drifting
20 Year Member
 
Joined: Jun 2001
Posts: 1,490
Likes: 17
From: Darlington, MD
Default Re: Need Help, Ideas, Have an annoying problem. (C4Fetish)

Sounds like the heater core.
Reply
Old Feb 6, 2002 | 09:21 PM
  #3  
Wheelman's Avatar
Wheelman
Thread Starter
Le Mans Master
20 Year Member
 
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Default Re: Need Help, Ideas, Have an annoying problem. (85vetteguy)

would that make the mist even when the ac is off.?
Reply
Old Feb 7, 2002 | 12:14 AM
  #4  
BBA's Avatar
BBA
Safety Car
20 Year Member
 
Joined: Dec 2000
Posts: 3,767
Likes: 5
From: Jacksonville Fl
Default Re: Need Help, Ideas, Have an annoying problem. (C4Fetish)

It can, but mostly you will notice a dampness on the passenger side floor mat.
Reply
Old Feb 7, 2002 | 12:20 AM
  #5  
CG77VETTE's Avatar
CG77VETTE
Drifting
20 Year Member
 
Joined: Jan 2001
Posts: 1,970
Likes: 21
From: Denville NJ
Default Re: Need Help, Ideas, Have an annoying problem. (C4Fetish)

You will also notice that the windshield fogs up when it shouldn't and there is residue from the fog. I hope it's note your core, it's a major PITA to get to. The bright side is it's very cheap if you do it yourself but I would recommend Mr. Goodwrench for that one.
Reply
Old Feb 7, 2002 | 01:28 PM
  #6  
Wheelman's Avatar
Wheelman
Thread Starter
Le Mans Master
20 Year Member
 
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Default Re: Need Help, Ideas, Have an annoying problem. (CG77VETTE)

yeah my windshield has been fogging up way worse than it should be.......
Reply
Old Feb 7, 2002 | 01:29 PM
  #7  
vader86's Avatar
vader86
Team Owner
20 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2001
Posts: 62,171
Likes: 1,735
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Default Re: Need Help, Ideas, Have an annoying problem. (C4Fetish)

you have the infamous Heater Core problem, youre gonna have LOTS of fun replacing it too.
Reply
Old Feb 7, 2002 | 01:34 PM
  #8  
Wheelman's Avatar
Wheelman
Thread Starter
Le Mans Master
20 Year Member
 
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Default Re: Need Help, Ideas, Have an annoying problem. (C4Fetish)

whats involved in doing it myself........and how much would it cost to get it replaced?

Also, is there any way to make it stop fogging my windshield until i can get if fixed?


[Modified by C4Fetish, 11:35 AM 2/7/2002]
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-1

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-2

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-3

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-4

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-5

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-6

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-7

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-8

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-9

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
Old Feb 7, 2002 | 02:30 PM
  #9  
CFI-EFI's Avatar
CFI-EFI
Race Director
10 Year Member
 
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Default Re: Need Help, Ideas, Have an annoying problem. (C4Fetish)

whats involved in doing it myself........and how much would it cost to get it replaced?
As stated above it's a MAJOR PITA. I did the one in my '84 last Sept. Get a hold of the service manual. There are little screws in there that even a double jointed monkey will have trouble getting at. Guess what that makes me? I consider myself a moderately able mechanic. Good enough to complete most projects, but WAY too slow to be a pro. It took me the better part of 3 days. It may only take YOU 3 hours. I'd LOVE to know what the flat rate is for this job. Almost anyone can do it. It's not technical, and doesn't require any special tools, just time, patience, and maybe, rubber arms. Get yourself a quote. Then, you can decide if your masocist enough to under take the project.

Also, is there any way to make it stop fogging my windshield until i can get if fixed?
Stop by the auto parts store and pick up a little adaptor they make just for this situation. It is a plastic tube that accepts a 5/8ths hose on one end and a 3/4 on the other. Remove the hoses from the heater core (at the firewall from under the hood) and connect them to each other using this adaptor. No more leaks inside the car. No more heater, either, until the core is replaced.

Have fun and good luck.
Reply
Old Feb 7, 2002 | 03:22 PM
  #10  
Wheelman's Avatar
Wheelman
Thread Starter
Le Mans Master
20 Year Member
 
Joined: Jun 2001
Posts: 6,694
Likes: 3
From: Less Talk, More WOT | Houston TX
Default Re: Need Help, Ideas, Have an annoying problem. (CFI-EFI)

just got off the phone with my shop and its gonna be $600 to replace the heater core......as i cant make close to that in 3 days, i guess ill be doin it myself......also found coolant all over my pass side carpet and floormat.....will be goin to the autoparts asap to get that hose to stop the car from leaking everywhere......So no more heater for a while...hehe glad i live in Texas.........appreciate everybodys help and insight.....especially CFI-EFI.
Oh and if someone could copy the pages out of the service manual i would GREATLY apprecitate it.

By the way....what exactly does the heater core look like so i know what to plug up.....?


[Modified by C4Fetish, 1:23 PM 2/7/2002]
Reply
Old Feb 7, 2002 | 04:02 PM
  #11  
CFI-EFI's Avatar
CFI-EFI
Race Director
10 Year Member
 
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Default Re: Need Help, Ideas, Have an annoying problem. (C4Fetish)

$600.00 doesn't suprise me. That equates to about a 10 hour job. I knew it was an involved project. I don't feel like such a whiner, now.

I could scan the paragraph from my '84 manual, but I don't know how well that translates on an '89. Probably not too far off.

You can't see the heater core. Under the hood, go to the right side of the engine. Locate the two heater hoses where they go in to the firewall. They are connected at the firewall with a hose clamp. Loosen the clamps and pull the hoses off of the nipples they connect to. You may have to slice the hose from the firewall out for an inch or so, to get them to release from the nipples. Then just square off the ends of the hoses and slide on to the adaptor and clamp. All your doing is short circuiting the heater out of the system. The brass nipples the hoses were on, sticking out of the firewall ARE the heater core. Except for the nipples, the heater core is inside, under the dash. By the way, that plastic adaptor shouldn't cost over $5.00 or so.
Reply

Get notified of new replies

To Need Help, Ideas, Have an annoying problem.





All times are GMT -4. The time now is 12:42 AM.

story-0
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-1
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-2
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-3
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-4
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-5
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-6
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-7
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-8
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-9
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE