General Maintenance & Repairs Leaks | Squeaks | Clunks | Rattles | Grinds
Sponsored by:
Sponsored by: CARiD

A/C noise

Thread Tools
 
Search this Thread
 
Old Jul 9, 2011 | 10:31 AM
  #1  
LS1121's Avatar
Thread Starter
TECH Addict
iTrader: (17)
 
Joined: Aug 2009
Posts: 2,054
Likes: 12
From: Charlotte NC
Question A/C noise

Ok before I spend my Hard earned money I thought I'd ask.
I have a noise coming from my A/C compressor that sounds like a screechy worn out bearing all the time. A/C on or off doesn't matter. A/C works fine cold air is Good. If I spray some WD40 on the clutch while the car is running the noise goes away for a little while and then comes back.

Should I replace the Belt? or the clutch itself? or do i need a new compressor? anyone having any experience with this type of issue? Thanx.
Reply
Old Jul 9, 2011 | 12:00 PM
  #2  
drone's Avatar
TECH Apprentice
iTrader: (5)
 
Joined: Jan 2004
Posts: 368
Likes: 0
From: Southern MD
Default

mine was making horrible sounds from the extra pulley being worn out.

theres a little idle pulley between the ac compressor and the crank. hard to see unless you get up under there.
Reply
Old Jul 9, 2011 | 01:18 PM
  #3  
LS1121's Avatar
Thread Starter
TECH Addict
iTrader: (17)
 
Joined: Aug 2009
Posts: 2,054
Likes: 12
From: Charlotte NC
Default

Yes I did that one, I put grease in all of the bearings except the big one on the water pump. This sound is coming from the A/C clutch, when i spray it with WD40 it get quiet for a little while.
Reply
Old Jul 9, 2011 | 06:02 PM
  #4  
drone's Avatar
TECH Apprentice
iTrader: (5)
 
Joined: Jan 2004
Posts: 368
Likes: 0
From: Southern MD
Default

time for AC delete
Reply
Old Jul 9, 2011 | 06:15 PM
  #5  
LS1121's Avatar
Thread Starter
TECH Addict
iTrader: (17)
 
Joined: Aug 2009
Posts: 2,054
Likes: 12
From: Charlotte NC
Default

Originally Posted by drone
time for AC delete
yes like that's what i want to do in 90 degree weather. Thanx you helped a lot
Reply
Old Jul 9, 2011 | 06:19 PM
  #6  
AlamoTA's Avatar
On The Tree
iTrader: (10)
 
Joined: Apr 2011
Posts: 111
Likes: 0
From: San Antonio
Default

I'd go ahead and replace the belt first. I had a loud screeching when I turned on the a/c. I know its not exactly like your problem, but a $20 belt is worth a shot. At least in my area it is
Reply
Old Jul 9, 2011 | 07:42 PM
  #7  
LS1121's Avatar
Thread Starter
TECH Addict
iTrader: (17)
 
Joined: Aug 2009
Posts: 2,054
Likes: 12
From: Charlotte NC
Default

Originally Posted by AlamoTA
I'd go ahead and replace the belt first. I had a loud screeching when I turned on the a/c. I know its not exactly like your problem, but a $20 belt is worth a shot. At least in my area it is
I didn't think that type of belt would squeak but I will replace it tomorrow, thanx.
Reply
Old Jul 9, 2011 | 08:48 PM
  #8  
omarrakeen's Avatar
TECH Addict
iTrader: (2)
 
Joined: May 2009
Posts: 2,472
Likes: 1
From: UAE, Dubai.
Default

id make sure that the compressor is not the source. if its close to knocking then its def your clutch, inspect it before it breaks. it sucks that you cant driver your car because ac broke! ive been there
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Jul 10, 2011 | 04:43 PM
  #9  
LS1121's Avatar
Thread Starter
TECH Addict
iTrader: (17)
 
Joined: Aug 2009
Posts: 2,054
Likes: 12
From: Charlotte NC
Default

I replaced the belt today and all is quiet...now. I will see tomorrow when it gets a cold start.
Reply
Old Jul 10, 2011 | 05:16 PM
  #10  
JRENIGAR's Avatar
10 Second Club
10 Year Member
iTrader: (37)
 
Joined: Dec 2010
Posts: 2,069
Likes: 2
From: 72396
Default

I have had chattering a/c clutches and some electrical contact cleaner or brake cleaner did the trick. There may be alot of dust in there and the clutch may not be able to engage or release evenly with the a/c pulley, If that makes sense...
Reply
Old Jul 10, 2011 | 09:55 PM
  #11  
LS1121's Avatar
Thread Starter
TECH Addict
iTrader: (17)
 
Joined: Aug 2009
Posts: 2,054
Likes: 12
From: Charlotte NC
Default

Originally Posted by JRENIGAR
I have had chattering a/c clutches and some electrical contact cleaner or brake cleaner did the trick. There may be alot of dust in there and the clutch may not be able to engage or release evenly with the a/c pulley, If that makes sense...
Yes it makes good sense, so electrical cleaner and not WD40, that is what I tried. I will spray it with dieletric spray tomorrow.
Reply
Old Jul 26, 2011 | 04:47 PM
  #12  
Fubar231's Avatar
Teching In
 
Joined: Oct 2010
Posts: 10
Likes: 0
Default

http://www.youtube.com/watch?v=ZOe7di-nIf4

Does it sound like that? My compressor went out and when the AC was on it would make that horrible grinding/screeching noise.

Not sure if that video is any help but i tried.
Reply
Old Jul 26, 2011 | 08:55 PM
  #13  
bad_408_vert's Avatar
TECH Junkie
15 Year Member
Liked
Loved
Community Favorite
iTrader: (6)
 
Joined: Jan 2009
Posts: 3,416
Likes: 10
From: Queens, NYC
Default

FML ^ My car makes that nose!

Fubar123 - Did you solve the noise issue & did your AC give cooler air than before?
Reply
Old Jul 27, 2011 | 12:52 AM
  #14  
LS1121's Avatar
Thread Starter
TECH Addict
iTrader: (17)
 
Joined: Aug 2009
Posts: 2,054
Likes: 12
From: Charlotte NC
Default

I replaced the belt and sprayed clutch assembly with electrical cleaner and all is well now.
Reply




All times are GMT -5. The time now is 10:52 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE