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

AC electrical problem

Thread Tools
 
Search this Thread
 
Old Oct 6, 2007 | 06:21 PM
  #1  
93cruiser's Avatar
93cruiser
Thread Starter
Pro
10 Year Member
 
Joined: Sep 2004
Posts: 505
Likes: 1
From: Guntersville Alabama
Default AC electrical problem

I need help on a AC electrical problem. Below are things that I know.
System is fully charged.
Electronic AC temp control functions normally.
AC clutch relay works
AC clutch checks good( no open circuit)

The problem begin as intermittent, now the clutch is not recieving power.

Any help will be appreciated.
93cruiser
Reply
Old Oct 6, 2007 | 07:26 PM
  #2  
jfb's Avatar
jfb
Team Owner
20 Year Member
 
Joined: Mar 2001
Posts: 54,124
Likes: 30
From: Cincinnati, Oh USA
Default

Check the 25 amp A/C fuse in the fuse block by the passenger door. Also check the fuse clips for bright, tight. Check for fully seated clutch connector. Check the blower control module ground connection to the frame on the RH side of the engine compartment (black wire from the blower control module). Make sure there are no codes set in the diagnostic mode on your a/c controller. You can jump the green wire out of the clutch to ground and the clutch should be heard to close.
Reply
Old Oct 6, 2007 | 08:12 PM
  #3  
93cruiser's Avatar
93cruiser
Thread Starter
Pro
10 Year Member
 
Joined: Sep 2004
Posts: 505
Likes: 1
From: Guntersville Alabama
Default

Need help. I am using a 93 fsm to diagnose my AC problem on a 94. Need to know what pin #'s to check on the red connector of the ecm to test whether my pressure switch is good or bad. The 93 fsm says to check between 21 and B+ for continuity. Thanks for any assistance.
93cruiser
Reply

Get notified of new replies

To AC electrical problem





All times are GMT -4. The time now is 06:07 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