Technical > Automotive > Can't tell what this noise is

Can't tell what this noise is

Jack up the front end and check the wheels for worn out bearings first. If nothing shows up loose, noisy, or worn, then rotate the tires front to rear to see if the noise moves to the back or not.
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What’s the point of owning a supercar if you can’t scare yourself stupid from time to time?

reply to Network Guy
Another way to check for wheel bearing noise.
Try "method 2"
»Re: [Help] Noise when turning?
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mbsastronomy.com

reply to Network Guy
Alright, jacked the truck up front only. No vibration on the coils.

Interestingly right after I did that, I applied some Lucas transmission fix and drove off for the day. I drive the truck this morning and the noise is just about gone.

Hopefully, that was just a coincidence. Otherwise, you know what that may mean...

Maybe it's time for a proper diagnosis, from a mechanic you trust?

I have other issues with this truck, but this particular noise was bothering me 'cause if the bearings are going south that's one situation I don't wanna be in when the wheels decide to snap off.

I'm taking it to my trusty guy tomorrow.

Front wheel bearings should be unit bearings. An entire hub assembly. I've changed plenty of them on my 96 Grand Cherokee. Of course, mine is lifted 3.5", and is on 31x10.5x15 tires.

Rubbing in the front end.... I have a similar noise in my front end. When I make a turn (like in a parking lot, or curve), it goes away. I think it is something with my front differential.

Here's something that will hopefully help you out with Jeep ownership. USE ONLY ATF+4 transmission fluid in the transmission and transfer case. I don't care what the book says.. use only ATF+4... you will thank yourself later.

Also, with the 242 - If you are in full time 4wd, and go to shift to 2wd, sometimes the transfer case will bind a little. The way I do it is while traveling at 45mph or so, as soon as you let off the accel, push the shifter forward to 2wd and hold it, and reapply throttle. You should feel a soft "pop" as it goes into 2wd.

If you're in one of the part time ranges.. You might have to shift into 2wd, and then back up some and pull forward to disengage it. It happens. Nothing wrong with the TC.

If you want some interesting reading, head over to www.jeepforum.com one of the better (IMHO) Jeep sites. Not just for off-roaders.

Welcome to owning a Jeep...
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"F is for Fire that burns down the whole town...
U is for Uranium...... Bombs...
N is for NO SURVIVORS!!!!!" Sheldon Plankton

reply to Network Guy
Something else....

said by "Tom Woods Custom Drive Shafts" :

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Many times you can have a U joint that is beginning to seize up and you'll not be able to observe any play in the joint. When this happens, you may be able to see a rusty oxidization on the U joint around the bearing cap seals. You might also be able to hear a squeaking noise while driving the vehicle that will start out slow and cycle faster as the vehicle moves faster. The squeaking may also disappear at high speed. Check to make sure the U joint bolts or strap and bolts are tight. Look also to see that the bearing caps have retained a tight fit into their respective yokes on the drive shaft. A cap that has lost its press fit will typically have a clean, polished are on the end from spinning in the bore of the yoke.

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reply to neonhomer