LT1-LT4 Modifications 1993-97 Gen II Small Block V8

95Z28 a/c not working. HELP!!!

Thread Tools
 
Search this Thread
 
Old Jun 26, 2010 | 01:50 PM
  #1  
Slowmaro95Z28's Avatar
Thread Starter
12 Second Club
 
Joined: Aug 2007
Posts: 387
Likes: 0
From: North Versailles, PA
Default 95Z28 a/c not working. HELP!!!

I got a 95 Z28 that I just got back on the road after building a new motor and now my a/c won't work. It just blows hot air. I checked for leaks, checked for power at the a/c fuse, the HVAC fuse, and the a/c relay. Everything checks out and all wires are in perfect condition. I'm lost here. Can anyone help me?
Reply
Old Jun 26, 2010 | 02:40 PM
  #2  
lethal bird's Avatar
TECH Fanatic
iTrader: (12)
 
Joined: Jul 2009
Posts: 1,826
Likes: 1
From: Dekalb, Ms
Default

I had this same problem after i put my longtubes on. Check in front of the a/c compressor and make sure there is nothing keeping the outer a/c pulley from spinning. I had an a/c line that had gotten wedged on the side of the pulley and it was keeping the outer pulley from moving. That was what happen to me. Dont ask me how that happen to mine i still dont know. I hope thats all it is and not anything to serious and costly.
Reply
Old Jun 26, 2010 | 02:43 PM
  #3  
Slowmaro95Z28's Avatar
Thread Starter
12 Second Club
 
Joined: Aug 2007
Posts: 387
Likes: 0
From: North Versailles, PA
Default

There isn't anything in the way at all. I checked all that before I started the new motor for the first time.
Reply
Old Jun 26, 2010 | 02:47 PM
  #4  
Z28Roxy's Avatar
TECH Fanatic
15 Year Member
iTrader: (4)
 
Joined: Mar 2007
Posts: 1,011
Likes: 27
From: Waukesha, WI
Default

Does your compressor engage?
Reply
Old Jun 26, 2010 | 02:48 PM
  #5  
Slowmaro95Z28's Avatar
Thread Starter
12 Second Club
 
Joined: Aug 2007
Posts: 387
Likes: 0
From: North Versailles, PA
Default

Not at all. Doesn't sound like the relay is working either. Maybe bad switch?
Reply
Old Jun 26, 2010 | 03:28 PM
  #6  
fleetmgr's Avatar
TECH Addict
 
Joined: Jun 2009
Posts: 2,012
Likes: 0
From: Tulsa, OK
Default

Are the wires plugged into the compressor?
Reply
Old Jun 26, 2010 | 03:32 PM
  #7  
SoxXpupPeT's Avatar
TECH Junkie
iTrader: (34)
 
Joined: May 2008
Posts: 3,431
Likes: 1
From: Yonkers, NY
Default

you coulda run outta refrigerant.. that would prevent the compressor from engaging..
Reply
Old Jun 26, 2010 | 04:02 PM
  #8  
Z28Roxy's Avatar
TECH Fanatic
15 Year Member
iTrader: (4)
 
Joined: Mar 2007
Posts: 1,011
Likes: 27
From: Waukesha, WI
Default

Originally Posted by SoxXpupPeT
you coulda run outta refrigerant.. that would prevent the compressor from engaging..
Only if he has a leak...

If his compressor isn't engaging he either has no freon (ie has a leak), has a problem with the wiring related to the compressor, or the compressor itself is bad.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Jun 26, 2010 | 08:10 PM
  #9  
Slowmaro95Z28's Avatar
Thread Starter
12 Second Club
 
Joined: Aug 2007
Posts: 387
Likes: 0
From: North Versailles, PA
Default

Everything is plugged in like it should be. I got power to the fuses and relay. There are no leaks and the freon or whatever it is now is full. Could this be a problem in my switch in the car? Is there an easy way to test for this? When I turn the a/c on I don't hear the relay.
Reply
Old Jun 26, 2010 | 08:20 PM
  #10  
fleetmgr's Avatar
TECH Addict
 
Joined: Jun 2009
Posts: 2,012
Likes: 0
From: Tulsa, OK
Default

Jump the compressor clutch straight to the battery to see if it engages, for starters.
Reply
Old Jun 26, 2010 | 08:21 PM
  #11  
Slowmaro95Z28's Avatar
Thread Starter
12 Second Club
 
Joined: Aug 2007
Posts: 387
Likes: 0
From: North Versailles, PA
Default

Good call. I'm so worried about the other end I didn't think to try that. Thanks.
Reply




All times are GMT -5. The time now is 03:11 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE