Notices
C5 General General C5 Corvette and C5 Z06 Discussion not covered in Tech

AC squeal on start up.

Thread Tools
 
Search this Thread
 
Old Oct 20, 2017 | 08:01 PM
  #1  
Stan97's Avatar
Stan97
Thread Starter
2nd Gear
 
Joined: Oct 2017
Posts: 2
Likes: 0
From: Orlando Florida
Default AC squeal on start up.

Hi all, I just had my ac compressor replaced and now after 1000 miles the ac unit squeals upon start up. It gets quieter once the car warms up but does not go completely away. If you turn off ac while it’s sqwealing the noise stops so I know it’s an ac issue. Would it be a loose or bad belt. Anyone have this issue ?
Reply
Old Oct 20, 2017 | 08:52 PM
  #2  
JR-01's Avatar
JR-01
Le Mans Master
 
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
Default

I had a squeal. It was still there after I removed main belt and started the car. It was the A/C belt. There was 79K miles on that belt and it was worn out.
Reply
Old Oct 21, 2017 | 06:39 PM
  #3  
Stan97's Avatar
Stan97
Thread Starter
2nd Gear
 
Joined: Oct 2017
Posts: 2
Likes: 0
From: Orlando Florida
Default

Thanks I will look into changing the belt.
Reply
Old Oct 21, 2017 | 08:17 PM
  #4  
ninety6's Avatar
ninety6
Instructor
All Eyes On Me
Photogenic
Liked
 
Joined: Sep 2015
Posts: 222
Likes: 72
Default

could possibly be the A/C Idler pulley. Pull the AC Belt, confirm the squealing stops. Spin the AC Idler without the belt on. If it spins easily (like spins more than once or twice)-- it's done. it should not spin freely.

You can replace the tensioner assembly, or just the pulley.

I'd think that would squeal all the time though, AC on or off -- since the belt is always spinning...

worth a look...

Last edited by ninety6; Oct 21, 2017 at 08:21 PM.
Reply
Old Oct 21, 2017 | 10:34 PM
  #5  
JR-01's Avatar
JR-01
Le Mans Master
 
Joined: Sep 2013
Posts: 8,900
Likes: 1,074
From: Wisconsin
Default

Originally Posted by Stan97
Thanks I will look into changing the belt.
Check the pulleys and tensioner while you are at it.
Reply

Get notified of new replies

To AC squeal on start up.





All times are GMT -4. The time now is 04:13 AM.

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