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

A/C Problems, any suggestions?

Thread Tools
 
Search this Thread
 
Old Jul 24, 2003 | 08:17 AM
  #1  
GS348's Avatar
GS348
Thread Starter
Burning Brakes
15 Year Member
 
Joined: Jul 2003
Posts: 811
Likes: 0
From: Nashville TN
Default A/C Problems, any suggestions?

My 96 GS's a/c is acting up. The compressor kicks on, but all of the vents on the dash are not working. The lower vents underneath the dash and the defrost vents are functioning. I've checked the fuses and they are alright. My mechanic is backed up and is not taking any appointments for at least a week, but he suspects the a/c programmer underneath the dash to be bad which is about $600--OUCH! Has anyone had a problem similar to this and if so a cure?
Reply
Old Jul 24, 2003 | 10:53 AM
  #2  
dlmeyers's Avatar
dlmeyers
Burning Brakes
10 Year Member
 
Joined: Feb 2000
Posts: 824
Likes: 2
From: Camden SC
Default Re: A/C Problems, any suggestions? (GS348)

When I see this type problem, most suggest checking the vacuum connections on the engine. If you have a service manual, check out the schematics and for the vacuum signal that opens the vent. I would not spend big money on a new controller until I knew the control was getting vacuum from the engine.

Good luck and let us know


dlmeyers 90 coupe zf6 3 speed shocks
Reply
Old Jul 24, 2003 | 11:33 AM
  #3  
nitrous1's Avatar
nitrous1
Burning Brakes
10 Year Member
 
Joined: Jul 2003
Posts: 811
Likes: 0
From: OH
St. Jude Donor '06-'07-'08-'09
Default Re: A/C Problems, any suggestions? (GS348)

This has all the symptons of a vacuum leak. Check under the hood for a loose or broken vacuum line. Then check under the dash to make sure everything is hooked up there.

Dan
Reply
Old Jul 24, 2003 | 11:50 AM
  #4  
Ray Quayle's Avatar
Ray Quayle
- 1986 Original Owner -
Supporting Lifetime Gold
Veteran: Navy
25 Year Member
Liked
Community Favorite
 
Joined: Apr 1999
Posts: 3,193
Likes: 139
From: North Yorkshire, England
Cruise-In I Veteran
Cruise-In II Veteran
Cruise-In III Veteran
Cruise-In IV Veteran
Cruise-In VII Veteran
Default Re: A/C Problems, any suggestions? (GS348)

Chris,
Have a look under your passenger fuel rail cover. There is a black plastic vacuum check valve there that tends to deteriorate over time. They're cheap. It supplies vacuum to the A/C I believe. Is your Cruise woirking?
Reply
Old Jul 24, 2003 | 01:54 PM
  #5  
GS348's Avatar
GS348
Thread Starter
Burning Brakes
15 Year Member
 
Joined: Jul 2003
Posts: 811
Likes: 0
From: Nashville TN
Default Re: A/C Problems, any suggestions? (dlmeyers)

Hey thanks for the information, I'll check it out. :yesnod:
Reply
Old Jul 24, 2003 | 01:56 PM
  #6  
GS348's Avatar
GS348
Thread Starter
Burning Brakes
15 Year Member
 
Joined: Jul 2003
Posts: 811
Likes: 0
From: Nashville TN
Default Re: A/C Problems, any suggestions? (nitrous1)

Thanks, I hope that's the issue
Reply
Old Jul 24, 2003 | 05:05 PM
  #7  
SouthernSon's Avatar
SouthernSon
Race Director
Supporting Lifetime Gold
25 Year Member
Liked
Loved
Community Favorite
 
Joined: Oct 2000
Posts: 14,064
Likes: 1,166
From: N. Alabama
Default Re: A/C Problems, any suggestions? (GS348)

It is more than likely the programmer. I followed the advise in this link and bought a rebuilt one from the 'last detail' for less than $200 and installed it myself. You can replace it in less than an hour for the first try. Check out this site and let me know if you need more instructions. http://www.hashmarks.com/techtips/ac_problems.htm
Reply
Old Jul 24, 2003 | 05:31 PM
  #8  
NE14SIN's Avatar
NE14SIN
Pro
 
Joined: Aug 2001
Posts: 646
Likes: 0
From: Alexandria Va
Default Re: A/C Problems, any suggestions? (GS348)

I don't mean to sound like an azz when I say this, but are you sure that it just isn't doing what it is suppose to do? When I hit Auto on my A/C, it turns on the lower vents and the dash vents for a few minutes before it turns on the ones that aim right at the passangers. I just turn down the A/C fan speed to 8, and it kicks right on.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

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

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

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

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

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

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Jul 28, 2003 | 11:22 PM
  #9  
GS348's Avatar
GS348
Thread Starter
Burning Brakes
15 Year Member
 
Joined: Jul 2003
Posts: 811
Likes: 0
From: Nashville TN
Default Re: A/C Problems, any suggestions? (NE14SIN)

I'm sure, thanks.
Reply
Old Jul 31, 2003 | 02:09 PM
  #10  
Jim P.'s Avatar
Jim P.
Advanced
 
Joined: Jun 2003
Posts: 64
Likes: 0
From: San Antnoio TX
Default Re: A/C Problems, any suggestions? (GS348)

RAY Quayle said it...check under the passenger fuel rail cover first. There's a black plastic vacuum switch under there. The AC in my 96 was acting up and it turned out to be that 5 dollar part.
Check the cheap and simple stuff first or you may get HOSED by one of these repair shops. Some shops will stick it to you even if they do find a cheap part.
THere's so many dishonest shops!
:yesnod: :cool:
Reply

Get notified of new replies

To A/C Problems, any suggestions?





All times are GMT -4. The time now is 03:40 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
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-9
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