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Topic Review (Newest First)
12-03-2012 08:25 AM
dale 3 Since tires are off? Spin tires on a balance machine and watch for any irregularity's out of round,bent rims,broken belts and check balance.1 bad tire will make you spend $$$ on many other areas.Did you check uj's in the front differential?The shaft that leads to your rotors.
12-02-2012 08:21 PM
harleydragon
Quote:
Originally Posted by cory05tj View Post
I went out and looked just now. They look ok to me. I've done a couple break jobs before so I know what bad ones look and sound like. Plus the brakes work fine as well. Is it a possibility that a rotate and balance job could fix this? Or does it not sound like thats the problem? I have no clue what else to look at/for.
wouldn't hurt to try anything..while the wheels are off if you can ,look at the inside brake pad and the rotor surface
12-02-2012 08:10 PM
cory05tj I went out and looked just now. They look ok to me. I've done a couple break jobs before so I know what bad ones look and sound like. Plus the brakes work fine as well. Is it a possibility that a rotate and balance job could fix this? Or does it not sound like thats the problem? I have no clue what else to look at/for.
12-02-2012 08:05 PM
harleydragon have you looked at the front brake pads and rotors ??
12-02-2012 07:21 PM
cory05tj ok so i'm bringing this thread back for just a minute. i'm having this problem AGAIN!
The rumbling starts at about 15 mph and stops when I come to a complete stop.
I dont have to be pushing the brakes for it to happen. I can just put it in second and coast like that and I'll get a pulsing/rumbling that resonates throughout the jeep.
I noticed it coming from the front drivers side tire around 55mph and it progressively got worse over time. I went out on a limb and decided there was something wrong with the tire itself so I put my brand new spare on there. And what do ya know? It was ALMOST gone! it was to the point I could live with it and only I could notice it. That was about 2 weeks and and now its starting to come back with this new tire. Any ideas/suggestions? Am I ruining my tires one at a time by putting them on up there?
10-24-2012 06:43 PM
cory05tj ok guys i think i have finally narrowed it down. i'm thinking it must be a wheel bearing now. when i'm driving it hear a lot more "road/tire noise" than i was getting before and it kind of pulses..almost like a helicopter sounds if that helps. are there any tricks to find out exactly which bearing it could be? the whole jeep rumbles like crazy under 10mph so its hard to narrow it down. when coming to a stop it sounds like i'm pulling up next to some kid with his subs turned up. or driving on rumble strips. thats the best i can describe it. any help is GREATLY appreciated.
10-17-2012 07:38 AM
harleydragon maybe get someone else to drive it slow while you listen from outside
10-16-2012 07:30 PM
cory05tj i agree. i'm at a loss as to what it could be. i jacked up each wheel and yanked up/down and side to side listening for noise and looking to see if there was any play in anything. everything seems to be tight besides the rear sway bar. i'm to the point where i've run out of things to check and i might just start throwing parts at it to see if i can fix it. might start with new bearings on the front and then move on to the axle u-joints. i just drove it again while the neighborhood is real quiet to see if i could at least pinpoint it to the front or rear and i cant tell. the whole damn jeep rumbles.
10-16-2012 06:52 PM
harleydragon I would think that you might hear a noise if it was brakes but probably not a vibration
10-16-2012 06:44 PM
cory05tj but would the brakes be the cause of it since i can drive along and still get the vibes without touching the brakes at all?
10-16-2012 06:35 PM
harleydragon maybe wheel bearings or brakes
10-16-2012 05:58 PM
cory05tj its a 6 speed m/t. the only thing i can think of is wheel bearings or front axle u-joints. i can drive along in 2nd gear going 10mph and it feels like im driving on rumble strips. as far as braking goes, if i slow down slowly i just feel the vibes longer than if i slam on the brakes. then i only feel it the last 10 feet or so before i stop
10-16-2012 03:31 PM
sevenservices does it change if you brake hard -vs- brake slow and steady?
10-16-2012 03:12 PM
Volta009 Mjolnir is thors hammer
10-16-2012 08:48 AM
05Unlimted
Quote:
Originally Posted by baker3 View Post
Ill be breaking out Mjolnir!!! Lets see who knows what that is lol
I feel like that's a halo reference..haha
10-16-2012 02:40 AM
trukdryverchuck Sounds like it could be rear wheel bearing
10-16-2012 01:51 AM
Rolf Automatic or manual?

If it is an automatic I have a pretty good idea what it could be from your explanation.

On the crossmember for the skidplate there is a bolt into the frame on each side. If one of those bolts are only a little loose it will vibrate like hell just before you come to a stop. This is usually only noticable when you are slowing down. Don't feel with your hand if they are tight, take a wrench and tighten them. I chased this problem for about a week on my TJ.
10-16-2012 12:18 AM
Volta009 Ha nobody caught the thor referance.....
10-11-2012 09:50 PM
cory05tj i guess i'll have to do the same thing. i'm tired of that damn ring. maybe i'll get a big hose clamp and stick it on there. but anyhow, is there anything else to consider that could be causing this rumbling. its driving me nuts and i want to get it taken care of before it gets too cold outside haha
10-11-2012 09:36 PM
DevilDogDoc I cut mine off and used a ziptie in its place when I pulled mine off. Just check it now and again and make sure it's greased in there.
10-11-2012 09:21 PM
cory05tj also, how important is the metal ring on the output shaft boot? i've been fighting that thing for the last 20 minutes
10-11-2012 09:03 PM
cory05tj ok guys, the rear drive shaft is completely out of the jeep. left it home and went for a spin. the vibration is still there, no change at all. i know for sure the rear sway bar bushings are shot, but if thats not whats causing it..what else can i check?
10-11-2012 02:18 AM
ShannonT I'm watching this.. will be replacing u-joints shortly and want to do it right.
10-10-2012 10:46 PM
cory05tj what are the yoke ears? those u-joints are brand new...are you just saying that they may be too tight in there and not spinning freely?
10-10-2012 10:41 PM
SeVeReDiStOrTiOn
Quote:
Originally Posted by cory05tj View Post
its def. the sway bar i had my hands on earlier then. do you think the trackbar would cause a rumbling vibration only at speeds of 10mph or less? thats the only time i get any vibration. its exactly like rolling up to every stop sign/light and the last 15 feet before you stop you're driving on rumble strips like the ones on the sides of the highway.
That's the rear shaft u-joints for sure...mine did the same thing. Do what jerry said, remove the shaft and give the yoke ears a whack from the inside...they should move freely with little resistance. When I installed the rear shaft to diff u-joint it was stiff as all hell. I gave it a few whacks and it loosened up nicely...night and day.
10-10-2012 09:54 PM
DevilDogDoc
Quote:
Originally Posted by Thomas302 View Post
Sounds dumb but maybe you can remove the rear driveshaft and plug the transfercase so you dont lose fluid, unless you have a SYE and then you are good. Drive it in 4wd with just the front axle pulling. If it goes away you know it was the rear driveshaft. Not sure if its the best idea but thats what I would do.
You can pull the shaft on the rear and drive forever like that. There is no way for fluid to leak from the tailshaft on TJ's, that was a YJ thing.
10-10-2012 09:03 PM
cory05tj i'll have to try it tomorrow after work. i did that with the front already and i had the rear out when i put both new u-joints in it. it was vibrating just like this with the bad joints. it was clicking then also. would the bad joints from before have been able to totally ruin the driveshaft? or it that out of the question?
10-10-2012 08:42 PM
Thomas302 Sounds dumb but maybe you can remove the rear driveshaft and plug the transfercase so you dont lose fluid, unless you have a SYE and then you are good. Drive it in 4wd with just the front axle pulling. If it goes away you know it was the rear driveshaft. Not sure if its the best idea but thats what I would do.
10-10-2012 08:30 PM
cory05tj its def. the sway bar i had my hands on earlier then. do you think the trackbar would cause a rumbling vibration only at speeds of 10mph or less? thats the only time i get any vibration. its exactly like rolling up to every stop sign/light and the last 15 feet before you stop you're driving on rumble strips like the ones on the sides of the highway.
10-10-2012 08:07 PM
Thomas302 The swaybar is the skinny bar that runs from one side to the other and connects to the end links and bolts to the front of the axle. I dont think that would cause a vibration. that track bar the bigger bar and it is on top of the axle and connects behind the ds upper contol arm. A worn out bushing in that could possible cause a vibration.
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