Belt squeels when AC is on - JeepForum.com
 
LinkBack Thread Tools
post #1 of 13 Old 07-24-2011, 02:12 PM Thread Starter
steve L.
Registered User
1997 ZJ 
 
Join Date: Sep 2007
Location: New Jersey
Posts: 521
Belt squeels when AC is on

So it seems that whenever I turn on my AC the belt starts to squeak really bad. I assume I need to tension the belt? If so, how do I do that exactly?


97' ZJ Laredo, I6, NP242

A Little Taste of Jersey Wheelin Of A 1997 & 1998 Jeep Grand Cherokee's For Your Enjoyment.

http://www.youtube.com/watch?v=sxa3-LJhz-Y
steve L. is offline  
Sponsored Links
Advertisement
 
post #2 of 13 Old 07-24-2011, 07:29 PM
classicmetalman
Registered User
 
Join Date: May 2005
Location: SoCal
Posts: 457
Sure it's your belt and not one of your pullies?

Robert
93 Laredo 4.0
96 Limited 4.0

Quote:
Originally Posted by murphydajeep View Post
I say you should still hit something just to let it know you mean business, or shake a hammer at it in a menacing fashion
classicmetalman is offline  
post #3 of 13 Old 07-24-2011, 08:12 PM
TheHalfWit
Registered User
1995 ZJ 
 
Join Date: Jan 2011
Location: Alexandria
Posts: 695
I'd check the deflection of the belt, and how loose it feels. The adjustment method is different from my 95 but I dug up a pic on adjusting the manual 96-98 I6

http://www.jeepforum.com/forum/f13/z...2/#post8759648

(hope thats the right diagram, the 93-95's are a lot more fun to do. )

Calm. C.

If a week goes by without needing to replace something, pinch me because I must be dreaming.
TheHalfWit is offline  
post #4 of 13 Old 07-25-2011, 12:24 AM
dougreuter
Registered User
1996 ZJ 
 
Join Date: Jul 2011
Location: Porterville
Posts: 19
I just had to replace mine because it did that, even if the belt is stripped just a little bit it will make that sound
dougreuter is offline  
post #5 of 13 Old 07-25-2011, 12:46 AM
Candymancan
Registered User
1998 ZJ 
 
Join Date: Aug 2010
Location: Virginia
Posts: 5,067
Mine did the same thing, when it started getting warm outside i turned the A/C on and then the belt started to squeel. Then went away but then a week later it just got so bad the noise was unbearable. Replaced the belt with a new one and it works like a dream now. Been working fine for a few months now. Make sure you clean and inspect the pully's for bad bearings and wobble.

2013 6.2 V8 Camaro SS 30k
98 5.9 V8 ZJ 180k
98 4.0 I6 ZJ 240k
90 5.9 SJ Grand Wagoneer 110k
Candymancan is offline  
post #6 of 13 Old 07-25-2011, 02:02 AM
Bale
Registered User
1998 ZJ 
 
Join Date: Jul 2011
Location: Jeep Heaven
Posts: 87
My serpentine belt sometimes squeals for a few seconds after startup. Can't see why it squeals some times, and most times not

A question: The belt has lots of tiny transverse cracks on the outside. Time for replacement, or is this normal?

Thanks in advance.

1998 ZG (ZJ) Grand Cherokee Ltd, 4L 4x4
Bale is offline  
post #7 of 13 Old 07-25-2011, 06:27 AM
Boodyrider
Registered User
1997 TJ Wrangler 
 
Join Date: Feb 2008
Location: Maryland
Posts: 2,526
Time for replacement.

97 TJ Sport - 4.0/HP D30 w ARB/8.8 w LS/4.88s; 35s and flat fenders on 2.5 lift

84 CJ7; frame off restoration in progress.

The technical advice you get from me here is worth exactly what you paid me for it. Warranty issues will be reimbursed at double what you paid me for the advice.
Boodyrider is offline  
post #8 of 13 Old 07-25-2011, 07:29 PM Thread Starter
steve L.
Registered User
1997 ZJ 
 
Join Date: Sep 2007
Location: New Jersey
Posts: 521
I don't think it's the belt. It's not in bad shape. It only does it when I first turn on the AC. Then once the engine warms up it goes away.

97' ZJ Laredo, I6, NP242

A Little Taste of Jersey Wheelin Of A 1997 & 1998 Jeep Grand Cherokee's For Your Enjoyment.

http://www.youtube.com/watch?v=sxa3-LJhz-Y
steve L. is offline  
post #9 of 13 Old 07-25-2011, 07:49 PM
Candymancan
Registered User
1998 ZJ 
 
Join Date: Aug 2010
Location: Virginia
Posts: 5,067
My old belt looked ok too, but like i said after i replaced it is was fine. Its only $30

2013 6.2 V8 Camaro SS 30k
98 5.9 V8 ZJ 180k
98 4.0 I6 ZJ 240k
90 5.9 SJ Grand Wagoneer 110k
Candymancan is offline  
post #10 of 13 Old 07-25-2011, 08:14 PM
CrazyMacaw
Registered User
 
Join Date: Sep 2010
Posts: 18
If you're sure the belt is ok and tensioned correctly then it could be the compressor showing signs of wear or maybe it's pulley is glazed.
CrazyMacaw is offline  
post #11 of 13 Old 07-25-2011, 08:22 PM Thread Starter
steve L.
Registered User
1997 ZJ 
 
Join Date: Sep 2007
Location: New Jersey
Posts: 521
how do I know if it is tensioned correctly?

97' ZJ Laredo, I6, NP242

A Little Taste of Jersey Wheelin Of A 1997 & 1998 Jeep Grand Cherokee's For Your Enjoyment.

http://www.youtube.com/watch?v=sxa3-LJhz-Y
steve L. is offline  
post #12 of 13 Old 07-26-2011, 12:09 AM
CrazyMacaw
Registered User
 
Join Date: Sep 2010
Posts: 18
Quote:
Originally Posted by steve L. View Post
how do I know if it is tensioned correctly?
Well, if you're really good you just grab the belt with one hand, stick your tongue out the left side of your mouth and with the other hand scratch your privates and proclaim "feels pretty good to me"

Me personally, I prefer to measure the belt tension between the idler pulley and the p/s pulley with a belt tension gauge. Not enough tension and the belt slips, too much tension and you could cause damage to the bearings of the engine's externals.
A new belt should have between 180lbs - 200lbs of tension.
A used belt should have between 140lbs - 160lbs of tension.

Gates makes an inexpensive tool called a Krikit II for checking Ribbed V /serpentine belts they're about $20.
CrazyMacaw is offline  
post #13 of 13 Old 07-26-2011, 05:33 AM
melk
Registered User
1996 ZJ 
 
Join Date: Sep 2009
Location: Charlotte
Posts: 2,890
Just installed a new Gates belt on my 4.0 and it made a world of difference. Engine runs tight and strong, not loose and sloppy like it used to. Paid $44 local.
melk is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
Fan belt help! j_ag1124 ZJ Grand Cherokee Forum 1 06-17-2011 11:58 PM
what V belt do I need groomvroom ZJ Grand Cherokee Forum 3 07-22-2009 11:30 AM
Water Pump and Belt/Belt Tensioner pilitusf ZJ Grand Cherokee Forum 2 07-04-2009 05:01 AM
Bad Belt? Yardman Harry ZJ Grand Cherokee Forum 3 10-22-2006 09:06 PM
That belt is really pis..... ZJ_COWBOY ZJ Grand Cherokee Forum 3 12-16-2004 03:31 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome