I have a 97 2.5L TJ and a while back the I started
to hear a loud squealing noise come from the engine.
It starts about 2 or 3 miles into any driving trip
and only occurs when I am deacelerating, or idling.

Since I have about 130k on the jeep I immediatly thought
it must be the belt.. so I replaced the serpentine
belt and tensioned it properly.. it still squealed..
So I played with the tension for a few weeks incase I was
on crack but I couldnt get it to stop.. So I figured
it might be a cheap belt, and replaced the belt again
with a top of the line belt from napa. It is STILL
squealing despite being tensioned properly.

All the acessories seem to be working fine, and turning
them on doesnt change the pitch or reduce the sound (AC).

Any ideas what I should do next? Its driving me crazy.

Thanks,
Mike

That sounds like a dry bushing on the idler or adjuster pulley. On the
4.0 there are two bushings and a big washer and a bolt that all have to
be ordered separately when they wear out. You can try to spray some oil
into those bushing areas to see if it helps for a while.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

Crayola wrote:

Crayola did pass the time by typing:
Watch your fingers but with the engine running, lightly
touch the sides of the belt with a bar of soap and notice
if it goes away. If it does then the odds are your harmonic
balancer has started to break down and walk off it's rubber
isolator. Read here.
http://members.cox.net/wilsond/hb/

--
DougW

Could be dirty pulleys.

Snow...

"Crayola" <crayola (AT) optonline (DOT) net> wrote

I have a similar problem on my 99 2.5L TJ -- except that it only happens at
idle when the AC is turned on. When I'm driving, accelerating, or
decelerating, it sounds ok. When I come to a complete stop, it squeaks like
crazy. Sounds like something vibrating against something more than a loose
belt.

I'd be interested to see what fixes yours.

Eric
99 TJ SE
"Crayola" <crayola (AT) optonline (DOT) net> wrote

take the belt off and start and run the vehicle if it's still there then
there is a good chance it's the fan clutch
]if it's gone put it bac on and start from scratch

DougW wrote:

???
God Bless America, ßill O|||||||O
mailto:LWHughes3rd (AT) aol (DOT) com http://www.billhughes.com/

mic canic wrote:

I was getting ready to ask the same thing... this guy can't be real...

Eric
"L.W. ("ßill") Hughes III" <billhughes (AT) cox (DOT) net> wrote

He works for Daimler, which doesn't surprise me.
There are a bunch of weird fans out there, though:
http://www.billhughes.com/WJcoolFan.jpg Just no reason for them to have
a clutch.
God Bless America, ßill O|||||||O
mailto:LWHughes3rd (AT) aol (DOT) com

Eric wrote:

Hydraulic fan motor??? That must cost far more than an electric one...
guess if folks are going to be submerging their WJs...

Eric
"L.W. ("ßill") Hughes III" <billhughes (AT) cox (DOT) net> wrote