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Old 02-11-2014, 09:24 PM   #1
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Angry Recurring squeak

Hey everyone! I'm new to the forum and Jeep community. My gf and I got a 95 YJ 2.5 auto, and I have been chasing a squeak in the engine bay for a while now. It started out as the alternator bearings going bad so I replaced it, the idler pulley, and serpentine belt. The squeak went away for a couple weeks, but has since returned. It sounds like it is coming from the passenger side still (no A/c). I did notice the other day there is a slight wobble on the harmonic balancer pulley so I thought that may be causing it to contact water pump pulley in an angle creating the squeak. I settled on that, but noticed now that the squeak doesn't really ever increase/decrease with RPMs so it has me slightly confused. Just looking for any ideas before I start throwing money around like it's my job, but then again it's her daily driver so I guess it is my job!!

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Old 02-12-2014, 04:41 AM   #2
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You sure it's not the leaf spring bushings?

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Old 02-12-2014, 03:57 PM   #3
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Im sure it's not that since it makes the noise while idling in park
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Old 02-12-2014, 04:35 PM   #4
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You should be able to test if its the belt by holding a dry bar of soap on the belt while the motor is running. Do both sides and let it coat the belt fully. If it's the belt it should stop, if it's a bearing, you'll still get the squeak.
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Old 02-12-2014, 06:25 PM   #5
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I had an annoying chirp in the front for weeks and traced it down to the black rubber bumpers for the hood to rest on. I added a dab of grease on each of them an it went away. Maybe that's your culprit.
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Old 02-12-2014, 07:03 PM   #6
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I've got one as well but I can't tell if its a vacuum leak or bearing failure. How do you tell the difference?
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Old 02-12-2014, 07:16 PM   #7
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Im gonna try the soap trick tomorrow hopefully as I now have my hands full since my daily driver Explorer has decided to have transmission problems. To test bearings you can try the soap trick or spray wd40 on the pulley itself to see if the squeal goes away. That is how I found the last squeal on the alternator pulley. I let the engine run in idle then spray where the pulley bolt is on each drive belt component. if nothing changes after you spray then you know your problem isnt in the drive belt or its pulleys
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Old 02-14-2014, 08:13 AM   #8
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Any luck?
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Old 02-14-2014, 01:14 PM   #9
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There's really only one solution for rattles and squeaks in an old Jeep...you evidently need a better sound system. Crank it up - problem solved!
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Old 02-14-2014, 04:56 PM   #10
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I havent had a chance to try it yet. My Explorer went down with bad servo sleeves so I had to take it in yesterday and now we got an unexpected 6" of snow here in Indy today so the g/f has the jeep. Now that I will be 2800 bucks lighter in the pocket I will have plenty of time to chase it down with any sort of fun money out of the question this weekend!!
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Old 02-14-2014, 04:58 PM   #11
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Haha Stan that was her solution to the problem!! I used to be that way myself but stupid things like this squeak just irritate me to no end so I have to deal with it cuz it's constantly on my mind!!
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Old 02-15-2014, 07:01 AM   #12
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I ended up fixing the vacuum leak by going through the hoses one by one. I picked up 4' of the 4mm line and 4' of the thinner line. Went through them one by one...

Also bought a replacement check valve for the brake booster.
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Old 02-15-2014, 06:53 PM   #13
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I just recently fixed that same squeak. Harmonic balancer. It was strange because I poured water on the belt and the squeak stopped for a while but came back. I replaced the belt and no luck. I noticed the harmonic balancer moving in and out when running. Changed it and the squeak is gone.
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Old 02-16-2014, 07:55 AM   #14
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How much of a pain was changing it? Did you have to pull the radiator to remove it and install it? How bout getting it back on? Did you press it back on with the installer tool or just tap it on with a hammer?
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Old 02-17-2014, 02:07 PM   #15
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Quote:
Originally Posted by YJ Sean View Post
How much of a pain was changing it? Did you have to pull the radiator to remove it and install it? How bout getting it back on? Did you press it back on with the installer tool or just tap it on with a hammer?
. I did pull the radiator off for clearance of the puller. The whole process was easy, just make sure the threads of the puller are lubed really good. To put the new one on, I just lubed everything good, used a hand held sledge hammer and a block of wood to get it started and the used the bolt to crank it home. Mine went easy, but if the new HB is tight get the installer tool.
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Old 02-17-2014, 03:04 PM   #16
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Quote:
Originally Posted by lathrop38834 View Post
. I did pull the radiator off for clearance of the puller. The whole process was easy, just make sure the threads of the puller are lubed really good. To put the new one on, I just lubed everything good, used a hand held sledge hammer and a block of wood to get it started and the used the bolt to crank it home. Mine went easy, but if the new HB is tight get the installer tool.

Thanks for the advice. Next decent day I have weather wise i will be doing that.

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