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

96 - Climate Control Issue

Thread Tools
 
Search this Thread
 
Old Jan 28, 2020 | 09:53 PM
  #1  
jakey1999's Avatar
jakey1999
Thread Starter
Advanced
 
Joined: Jun 2019
Posts: 73
Likes: 3
From: Olympia, WA
Default 96 - Climate Control Issue

My 96 CE AT heat works fine at start but gradually gets cooler the longer I drive. After a period of time it starts to feel cool, and I need to bump up the temperature to about 81 and above to get it warm again. Just flushed the coolant and heater core and added a new thermostat (180). Also, there are no climate control codes displaying (shows "00").

Any ideas?

Thanks,

Last edited by jakey1999; Jan 28, 2020 at 09:59 PM.
Reply
Old Jan 28, 2020 | 10:25 PM
  #2  
s carter's Avatar
s carter
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2014
Posts: 2,888
Likes: 590
From: New Port Richey FL
Default

Try running in the Recirculation mode, in automatic mode your car is cold it pumps heat and as the car gets warm it cuts back. Or at least that's what my car seems to do.
Reply
Old Jan 28, 2020 | 11:11 PM
  #3  
jakey1999's Avatar
jakey1999
Thread Starter
Advanced
 
Joined: Jun 2019
Posts: 73
Likes: 3
From: Olympia, WA
Default 96 - Climate Control Issue

Originally Posted by s carter
Try running in the Recirculation mode, in automatic mode your car is cold it pumps heat and as the car gets warm it cuts back. Or at least that's what my car seems to do.
Re-circulation also blows cool until temp is 81 degrees and above.

Also, noticed when in defroster mode air is not blowing from the front windowshield vent. Maybe it's a climate control module issue?

Last edited by jakey1999; Jan 28, 2020 at 11:11 PM.
Reply
Old Jan 28, 2020 | 11:17 PM
  #4  
s carter's Avatar
s carter
Melting Slicks
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2014
Posts: 2,888
Likes: 590
From: New Port Richey FL
Default

Definitely a possibility, I had replace it in my car. In my case a/c compressor wouldn't run and vents were a little tempermental.

Once I got it off the firewall opened the back of it lots of Corrosion and I think a cracked board. So I threw in the one I found.

Last edited by s carter; Jan 28, 2020 at 11:21 PM.
Reply
Old Jan 29, 2020 | 10:09 AM
  #5  
pcolt94's Avatar
pcolt94
Le Mans Master
15 Year Member
 
Joined: Jan 2006
Posts: 5,620
Likes: 206
From: Orlando FL
Default

My 94 does the same thing I have to keep bumping the temperature up to keep it warm. When I hit 85 that is the maximum regulation temperature it will regulate the blend door. After that, 90 it the next step up and it just goes full heat with no regulation. If you can stand the heat then you just have to take it till you get to hot. I found if I go back to 85 in time it starts to regulate. Definitely not the greatest heat controller.

Many have complained about this heater function. And it seems it does not matter what mode you are in, they all work about the same perhaps with a slight difference. That just seems to be how our cars function and we just have to deal with it.
Reply
Old Jan 29, 2020 | 10:56 AM
  #6  
Oklahoma Adam's Avatar
Oklahoma Adam
Racer
10 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2012
Posts: 272
Likes: 46
From: Tulsa OK
Default

I have the same issue on my 1990. Keeping an eye on this thread.
Reply
Old Jan 29, 2020 | 10:43 PM
  #7  
jakey1999's Avatar
jakey1999
Thread Starter
Advanced
 
Joined: Jun 2019
Posts: 73
Likes: 3
From: Olympia, WA
Default

Thanks all. Will definitely keep checking back for solutions.

I think I'm going to tackle the ac programmer next as several others have.
Reply

Get notified of new replies

To 96 - Climate Control Issue





All times are GMT -4. The time now is 01:46 AM.

story-0
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-1
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-2
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-3
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-4
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-5
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-6
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-7
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-8
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE
story-9
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE