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

early C4 A/C panel explain

Thread Tools
 
Search this Thread
 
Old Oct 5, 2023 | 12:13 PM
  #1  
Yariv's Avatar
Yariv
Thread Starter
Racer
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2015
Posts: 261
Likes: 24
From: Israel
Default early C4 A/C panel explain

Hi,
I'd like to know better how the A/C operates.
The MAX makes the compressor work at full power. NORM (half the power?).
B/L?
VENT? Only the blower without the compressor?
COLD/HOT slider, moves the blend heater core door?
Thanks

Reply
Old Oct 5, 2023 | 12:24 PM
  #2  
Yariv's Avatar
Yariv
Thread Starter
Racer
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Sep 2015
Posts: 261
Likes: 24
From: Israel
Default

I think I found an answer.
https://www.corvetteforum.com/forums...post1581582086

The HOT/COLD moves the blend door.
Reply
Old Oct 5, 2023 | 12:26 PM
  #3  
1Hotrodz's Avatar
1Hotrodz
Melting Slicks
10 Year Member
All Eyes On Me
Liked
Top Answer: 1
 
Joined: Jun 2014
Posts: 2,268
Likes: 503
From: NJ
Default

Originally Posted by Yariv
Hi,
I'd like to know better how the A/C operates.
The MAX makes the compressor work at full power. NORM (half the power?).
B/L?
VENT? Only the blower without the compressor?
COLD/HOT slider, moves the blend heater core door?
Thanks
Max setting opens the recirc door in the plenum box, allowing 80% of the airflow to be recirculated thru the cooling coil and the remaining 20% of the airflow from the outside air intake (by the windshield cowl opening)
B/L is bi- level meaning air is distributed at two levels, the dash vents and the heater vent,
Vent and Hot / Cold you are correct.
Reply
Old Oct 5, 2023 | 12:48 PM
  #4  
Kilobuck84's Avatar
Kilobuck84
Drifting
Active Streak: 30 Days
Photogenic
Loved
Community Favorite
 
Joined: Nov 2021
Posts: 1,750
Likes: 389
From: People's Republic of Nueva York
Default

Defrost also runs the A/C if it's above 40 degrees ambient.
Reply

Get notified of new replies

To early C4 A/C panel explain





All times are GMT -4. The time now is 08:55 PM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
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-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

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


VIEW MORE
story-5
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-6
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-7
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-8
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-9
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