pump making a lot of noise? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 08-24-2008, 10:38 PM   #1
Jeeper
 
chrsr3089's Avatar
 
Join Date: Oct 2007
Location: sacramento ca
Posts: 57
pump making a lot of noise?

i have a 2002 tj with a 4.0l and when its at idol there is a noise from a pump that clicks on loud then gets quieter and it does this back and fourth the whole time it idols. does anyone no what this could be? thanks.

chrsr3089 is offline   Quote
Old 08-24-2008, 10:42 PM   #2
Really?

WF Lifetime Member
 
ccain's Avatar
 
Join Date: Feb 2007
Location: SoCal
Posts: 6,453
Images: 9
Is it under the hood? If so, do you have Air Conditioning? If so it may be the compressor clutch cycling. It's normal and does this to keep the internals of the compressor lubricated and free from seizing. If it's making more noise than usual you may want to look at it as the bearings go bad from time to time.

ccain is offline   Quote
Old 08-24-2008, 10:46 PM   #3
Pushy, Loudmouthed, and Ballsy
 
Dare2BSquare's Avatar
 
Join Date: Jul 2006
Location: Driving Around Arkansas In My Black XJ
Posts: 6,177
I'm surprised we didn't go into idol / idle on that one.
__________________
99 XJ Sport
4.0l
AW4
NP231
d30/C8.25
3" Skyjacker lift
31 x 10.50 General Grabbers


http://i66.photobucket.com/albums/h2...are/TMLogo.gif Are all fishermen liars, or do only liars fish?
Dare2BSquare is offline   Quote
Old 08-24-2008, 10:46 PM   #4
Jeeper
 
chrsr3089's Avatar
 
Join Date: Oct 2007
Location: sacramento ca
Posts: 57
its coming from under the hood it has a/c. and its definetly louder then it is suppose to be. could it maybe be the oil pump?
chrsr3089 is offline   Quote
Old 08-24-2008, 11:22 PM   #5
Really?

WF Lifetime Member
 
ccain's Avatar
 
Join Date: Feb 2007
Location: SoCal
Posts: 6,453
Images: 9
Quote:
Originally Posted by chrsr3089 View Post
its coming from under the hood it has a/c. and its definetly louder then it is suppose to be. could it maybe be the oil pump?

If it were the oil pump, and it made that much noise the oil pressure would fluctuate. Is the oil pressure steady?

Other things to check out are the fan clutch, water pump, alternator and idler pulley... Although those would probably make a constant sound.

Quote:
Originally Posted by Dare2BSquare View Post
I'm surprised we didn't go into idol / idle on that one.
HAHAHA! I thought about it but... come on, idol - idle isn't as abused as the other!
ccain is offline   Quote
Old 08-24-2008, 11:32 PM   #6
Jeeper
 
chrsr3089's Avatar
 
Join Date: Oct 2007
Location: sacramento ca
Posts: 57
clutch fan, water pump and alternator are new and the oil pressure is steady. where is the idler pulley?
chrsr3089 is offline   Quote
Old 08-24-2008, 11:46 PM   #7
Really?

WF Lifetime Member
 
ccain's Avatar
 
Join Date: Feb 2007
Location: SoCal
Posts: 6,453
Images: 9
Actually there are two pulleys to check... The tensioner and the Idler



Not trying to be a dick here, but I'm not sure of your technical level so... DON'T check them while the motor is running!

Loosen the tensioner and take the belt out of the way. check for looseness and overall slop. They should not make noise when turned and should spin freely without a feeling of roughness when they are turned by hand. When new, they spin freely when you turn them but do not continue to spin when you let them go.

But I really don't think this is your problem, but it never hurts to check em anyway, especially if the Jeep has any miles on it.
ccain is offline   Quote
Old 08-25-2008, 12:18 AM   #8
Jeeper
 
chrsr3089's Avatar
 
Join Date: Oct 2007
Location: sacramento ca
Posts: 57
ya i just replaced the tensioner to. and i have a decent amount of knowledge about jeeps at least for an 18 year old. it might not seem like it with all these dumb questions ive asked lol.
chrsr3089 is offline   Quote
Old 08-25-2008, 12:20 AM   #9
Jeeper
 
chrsr3089's Avatar
 
Join Date: Oct 2007
Location: sacramento ca
Posts: 57
i think im going to put a new ac compressor in it and see if that does it. where is the best place to buy one?
chrsr3089 is offline   Quote
Old 08-25-2008, 01:03 AM   #10
Jeeper
 
Join Date: Aug 2008
Posts: 2,473
That's an expensive experiment, you'll see when you order it.

Why not try to determine WHERE the noise is coming from before throwing parts at it? For free?

Use a 3' hunk of heater hose - or garden hose. Put your ear against one end, point the other end at the places that may be making the noise. You'll hear it plainly when you point it at the noise source.

I'm surprised nobody else mentioned it before.

__________________
It's no wonder the country is falling apart - stupidity abounds!
rrich is offline   Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not 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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Drivetrain noise?? Jimmykick TJ Tech Forum 8 12-14-2008 05:09 AM
Transfer Case making noise when in 4wd raidergunner TJ Tech Forum 10 05-07-2008 12:07 AM
Need Help Jeep engine making rapping noise mud707 TJ General Discussion Forum 20 03-20-2008 02:18 PM
starter making noise cbmedina33 YJ Tech Forum 0 01-03-2008 08:20 PM
Noise from AC PUMP area 97TJAC TJ Tech Forum 6 06-16-2006 08:21 AM



Download our Mobile App

» Featured Product

All times are GMT -5. The time now is 07:03 AM.


User Alert System provided by Advanced User Tagging v3.1.0 (Pro) - vBulletin Mods & Addons Copyright © 2015 DragonByte Technologies Ltd.

Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC