Squealing from the engine compartment - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ 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 10-19-2009, 10:34 AM   #1
Newb
 
forker's Avatar
 
Join Date: Oct 2009
Location: Round Rock, Texas
Posts: 10
Angry Squealing from the engine compartment

So I have a 95 2.5 wrangler and there has been this persistant squeal comming from under the hood. It seems to be comming from the vicintity of the fuel injectors, but really sounded like a belt squeal. After replacing the belt, I concured it wasn't a belt.

The squeal starts up after the engine has warmed up. When the engine is under some considerable load, ie, acceleration, the noise stops, except when I push in the clutch to shift gears, in which the squeals returns. Then, once I reach cruising speeds and not accelerating anymore, the noise builds back up.

This noise is driving me crazy, so if anyone has any idea, please, I'm loosing my mind!

forker is offline   Quote Quick Reply
Old 10-19-2009, 11:18 AM   #2
Jeeper
 
tlrrob1000's Avatar
 
Join Date: Jul 2009
Location: Pain is a gift...Fear is not an option!
Posts: 786
Images: 23
I was leaning toward the the intake or exhaust manifolds. But it goes away under load?

__________________
No Bad Days!
tlrrob1000 is offline   Quote Quick Reply
Old 10-19-2009, 06:40 PM   #3
Newb
 
forker's Avatar
 
Join Date: Oct 2009
Location: Round Rock, Texas
Posts: 10
Basically, the squeal changes pitch as I hit the gas, generally, the lower the rpm the higher the pitch. And as I accelerate, the squeal goes away, until I reach cruising speed and don't need to push on the gas as hard.

A second note to the problem that could very likely be related. Previous owners of this jeep didn't take the best of care of it. The oil had/has a large amount of sludge and the pressure has always seemed to be a bit on the high side. This last oil change, I ran some cleaner through it before changing the oil and the pressure problem subsided a bit. And after a day of driving the squeal doesn't seem to be as loud, it's still there and acting as it has been, but just a little quieter, just a little though.

I don't know. Wits end over here.
forker is offline   Quote Quick Reply
Old 10-19-2009, 10:53 PM   #4
Jeeper
 
tlrrob1000's Avatar
 
Join Date: Jul 2009
Location: Pain is a gift...Fear is not an option!
Posts: 786
Images: 23
Something else that can cause a squeel is the pilot bearing. Try and see if it changes pitch while you push the clutch in and out.
__________________
No Bad Days!
tlrrob1000 is offline   Quote Quick Reply
Old 11-05-2009, 11:47 AM   #5
Newb
 
Join Date: Nov 2009
Posts: 1
Im having a similar problem. did you find a resolution?

Thanks, Mike
mkyv_18 is offline   Quote Quick Reply
Old 11-05-2009, 11:54 AM   #6
Deaky

WF Supporting Member
 
Fweaky's Avatar
 
Join Date: Aug 2009
Location: Central Virginia
Posts: 2,202
Images: 18
I agree with tlrrob1000, I would say clutch pilot bearing also if the squealing stops when you push in the clutch.
__________________
Nothing is foolproof to a sufficiently talented fool.
Fweaky is offline   Quote Quick Reply
Old 08-19-2012, 03:41 PM   #7
Newb
 
anfunk3's Avatar
 
Join Date: Aug 2012
Posts: 1
I have the same exact problem and I can't find a resolution anyway. Wondering if anyone has figured it out or has anymore ideas. The squealing is driving me insane. Thanks!!
anfunk3 is offline   Quote Quick Reply
Old 08-19-2012, 04:20 PM   #8
Jeeper
 
Redrider94's Avatar
 
Join Date: Aug 2010
Posts: 633
You have a vacuum leak, when the engine is at a low rpm or idle you have the most vacuum, thus the most noise through the point of the leak. When you increase engine speed the the vacuum is at its lowest, less noise. You will need to listen around your engine to find the leak.
Redrider94 is offline   Quote Quick Reply
Old 08-20-2012, 06:14 PM   #9
Jeeper
 
90DesertTanYJ's Avatar
 
Join Date: Jul 2012
Location: JAX, FL
Posts: 635
Quote:
Originally Posted by Redrider94 View Post
You have a vacuum leak, when the engine is at a low rpm or idle you have the most vacuum, thus the most noise through the point of the leak. When you increase engine speed the the vacuum is at its lowest, less noise. You will need to listen around your engine to find the leak.
I agree with this. Symptoms are exactly how the vacuum acts in an engine in use. Idle-high vac, under load-low vac, cruisin speed-back to high vac.
90DesertTanYJ is offline   Quote Quick Reply
Old 08-20-2012, 08:13 PM   #10
Jeeper
 
Join Date: Aug 2011
Location: north of St.Franisville La.
Posts: 2,006
Send a message via Yahoo to Nubby55
+2
Nubby55 is offline   Quote Quick Reply
Old 08-20-2012, 08:47 PM   #11
Jeeper
 
DILLIGAF's Avatar
 
Join Date: Sep 2011
Location: Cortland NY
Posts: 595
One of my mechanic has a gizmo that blowes smoke thru the vacume lines, it makes it very easy to find the leak.
__________________

Semper Fidelis!

95 2.5L, 5sp, 4" RC Lift, Lock Right front diff. 8.8 LS 4.10 gears, M/T 31" Baha Claw
DILLIGAF is offline   Quote Quick Reply
Old 08-21-2012, 05:54 AM   #12
Jeeper
 
90DesertTanYJ's Avatar
 
Join Date: Jul 2012
Location: JAX, FL
Posts: 635
Oh and your not missing any small animals are you?? Just had to say it!

90DesertTanYJ is offline   Quote Quick Reply
Reply

Tags
engine , noise , squeal

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

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.



Thread Tools

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 Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
rebuilding your engine?? Get Stroked!!! jeeper95yj YJ General Discussion Forum 6 01-01-2014 04:47 PM
New to forum, engine install time deaglementor YJ Tech Forum 7 05-07-2009 11:14 PM
Squealing Engine...Driving me crazy! nater344 TJ Tech Forum 23 04-12-2009 08:27 PM
power washing engine compartment dwdrums801 TJ General Discussion Forum 6 10-06-2007 08:58 AM
Waterproofing the engine compartment techie_medic TJ General Discussion Forum 7 07-23-2007 02:34 AM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 01:44 AM.



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