C4 General Discussion General C4 Corvette Discussion not covered in Tech

checking / charging AC

Thread Tools
 
Search this Thread
 
Old Jul 5, 2019 | 05:53 PM
  #1  
JD1964's Avatar
JD1964
Thread Starter
Burning Brakes
10 Year Member
Liked
Loved
 
Joined: Apr 2014
Posts: 829
Likes: 192
Default checking / charging AC

96 LT1

The AC was not working very well when we bought the car years ago and I added some 134 and it improved to the "acceptable" level. I was going blind without proper gauge set though. I have since acquired full manifold set. When I hook up the gauge set, what kind of pressures should I be looking for in a properly operating system? Should I hook and check both high and low sides?

Thanks
Reply
Old Jul 5, 2019 | 06:00 PM
  #2  
BLUE1972's Avatar
BLUE1972
Race Director
15 Year Member
Liked
Loved
Top Answer: 5
 
Joined: Oct 2008
Posts: 19,278
Likes: 1,681
From: Long Island
Default

Get a copy of the service manual, also servicing the A/C is temperature dependent.

If you want to get close - watch a U Tube Vid and compensate for the temperature.
Reply
Old Jul 5, 2019 | 08:12 PM
  #3  
65Z01's Avatar
65Z01
Team Owner
20 Year Member
 
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Default

Indeed pressures/ranges are quite dependent on environmental conditions along with type of refrigerant; refer to available charts on A/C.
Reply
Old Jul 5, 2019 | 08:44 PM
  #4  
xrav22's Avatar
xrav22
Drifting
10 Year Member
 
Joined: Mar 2013
Posts: 1,952
Likes: 239
From: Venice Cali.
Default


This chart worked for my cars.
Reply
Old Jul 28, 2019 | 04:35 PM
  #5  
JD1964's Avatar
JD1964
Thread Starter
Burning Brakes
10 Year Member
Liked
Loved
 
Joined: Apr 2014
Posts: 829
Likes: 192
Default

I found a leak. It's the pressure switch in the suction line (low side). The fitting on the switch has a tiny crack. Is this the low pressure cut off switch? If not, what's it called so I can order a new one? Thanks

Reply

Get notified of new replies

To checking / charging AC





All times are GMT -4. The time now is 11:22 AM.

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