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Old 11-11-2013, 10:06 AM   #1
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Growling while accelerating over 20 mph

My rear axle growls like a mud tire when i accelerate at speeds over 20mph. What could this be? Axle bearings?

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Old 11-11-2013, 01:58 PM   #2
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Or pinion bearings?

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Old 11-11-2013, 03:24 PM   #3
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U-joint maybe? Is everything lined up how it needs to be (tcase, driveshaft, & pinion angles?)
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Old 11-11-2013, 03:51 PM   #4
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Yup everything is lined up properly. I have a 4 inch suspension lift but with bumpers and winch and rear tire carriers its like 3 inches of lift. And i have a 1.25 inch jks body lift with a 1 inch mml. My driveline angles are good. And i checked the ujoints. No play in them at all
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Old 11-11-2013, 04:51 PM   #5
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Wheel bearings. Those are fun!
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Old 11-11-2013, 05:03 PM   #6
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Yup everything is lined up properly. I have a 4 inch suspension lift but with bumpers and winch and rear tire carriers its like 3 inches of lift. And i have a 1.25 inch jks body lift with a 1 inch mml. My driveline angles are good. And i checked the ujoints. No play in them at all
Just jack up each tire and put one hand on the top of the tire and one hand on the bottom of the tire. Then shake it back and forth. If there's any movement that's not side to side as if you were turning then its the wheel bearings.
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Old 11-11-2013, 06:48 PM   #7
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Just jack up each tire and put one hand on the top of the tire and one hand on the bottom of the tire. Then shake it back and forth. If there's any movement that's not side to side as if you were turning then its the wheel bearings.
Only thing it does when i jacked up the tires is push in and out no movement when i shook it
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Old 11-11-2013, 07:01 PM   #8
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Only thing it does when i jacked up the tires is push in and out no movement when i shook it
There was no up and down movement?
Left and right movement is fine but there should not be any movement up and down. By up and down I mean when you put one hand on top of the tire and one hand on the bottom and push with one hand and pull with the other and then switch it around the tire shouldn't push in or out at all.
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Old 11-11-2013, 07:03 PM   #9
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Only thing it does when i jacked up the tires is push in and out no movement when i shook it
That doesn't sound good does it??? Push in and out?
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Old 11-11-2013, 07:05 PM   #10
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Only thing it does when i jacked up the tires is push in and out no movement when i shook it
If I were you before you go any farther try taking out the rear drive shaft and driving and see if the noise goes away. Do the same for the front.
Then check the fluids in the rear axle and inspect the R&P.
After you check the wheel bearing in the way I said earlier.
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Old 11-11-2013, 07:33 PM   #11
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If I were you before you go any farther try taking out the rear drive shaft and driving and see if the noise goes away. Do the same for the front. Then check the fluids in the rear axle and inspect the R&P. After you check the wheel bearing in the way I said earlier.
By pushing in and out i mean the axle shafts can be pushed in and out by like a cm or two. But im assuming this is normal since it is a c-clip axle
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Old 11-11-2013, 08:25 PM   #12
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Uhh. No.
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Old 11-11-2013, 09:15 PM   #13
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By pushing in and out i mean the axle shafts can be pushed in and out by like a cm or two. But im assuming this is normal since it is a c-clip axle
Is this for one specific wheel or are all 4 wheels doing this? If it's only one wheel, lets say for example your back passenger wheel then take it out and turn right and if the noise gets louder then it's the wheel bearing. If it's all 4 wheels I doubt it's the wheel bearings. The chances of all 4 going bad at the same time seems pretty far fetched...
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Old 11-11-2013, 09:37 PM   #14
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Just the rear two wheels.
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Old 11-12-2013, 12:04 AM   #15
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I just read one of your previous threads and you said that the rear pinion bearing was going bad in yours. Did you ever fix that?
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Old 11-12-2013, 08:34 AM   #16
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Nope. I was wondering if that could be it but i wiggled the yoke on the pinion and it didnt move at all so my bearing seem to still be good
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Old 11-12-2013, 09:09 AM   #17
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My front output shaft bearing in my transfer case is bad and if I put my front drive shaft back in, it will make a roaring/ringing sound.

I would just go ahead and disconnect your front drive shaft from the front axle and tie it up on your suspension then go for a drive. If the sound for away, you know it has something to do with your driveshaft/transfer case. Repeat for the rear except actually take the rear drive shaft out because it will spin regardless.
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Old 11-12-2013, 09:17 AM   #18
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My front output shaft bearing in my transfer case is bad and if I put my front drive shaft back in, it will make a roaring/ringing sound. I would just go ahead and disconnect your front drive shaft from the front axle and tie it up on your suspension then go for a drive. If the sound for away, you know it has something to do with your driveshaft/transfer case. Repeat for the rear except actually take the rear drive shaft out because it will spin regardless.
The front driveshaft wont still spin if i ziptied it out of the way when im driving?
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Old 11-12-2013, 09:45 AM   #19
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Unless you've got it in 4wd it won't. It spins with the axle. If you take if off from the axle, it won't spin.
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Old 11-12-2013, 10:30 AM   #20
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Ahh ok gotcha. Ill disconnect it and see if it still makes the mud tire noise
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Old 11-12-2013, 12:55 PM   #21
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Like I originally said, the DS will make more of a whine than a roar. But it's worth a try.
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Old 11-12-2013, 01:00 PM   #22
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Like I originally said, the DS will make more of a whine than a roar. But it's worth a try.
Yeah i just zip tied it up to the frame and it still made the noise so its definitely the rear axle
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Old 11-12-2013, 01:28 PM   #23
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Yeah i just zip tied it up to the frame and it still made the noise so its definitely the rear axle
Have you checked the fluid in your diff? And inspected the R&P?
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Old 11-12-2013, 01:50 PM   #24
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Changed the fluid three weeks ago and its still full and i couldnt get the cover off the diff so i just pumped out the old fluid and pumped in the new fluid no metal shavings in fluid but there was quite a bit of water inside
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Old 11-12-2013, 10:35 PM   #25
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Any suggestions on how to get a diff cover off?
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Old 11-12-2013, 11:10 PM   #26
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Any suggestions on how to get a diff cover off?
Can you not get it off because of rusty bolts? Or once you remove the bolts can you not get the cover off?
After you get the bolts out use a flat head screw driver to pry it off.
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Old 11-12-2013, 11:47 PM   #27
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Can you not get it off because of rusty bolts? Or once you remove the bolts can you not get the cover off? After you get the bolts out use a flat head screw driver to pry it off.
Yeah i got all the bolts out and tryed getting a screwdriver inbetween it and the case and ot wouldnt come off the rtv is black and its like concrete.
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Old 11-13-2013, 12:14 AM   #28
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Yeah i got all the bolts out and tryed getting a screwdriver inbetween it and the case and ot wouldnt come off the rtv is black and its like concrete.
That means someone's been there before because the factory rtv is orange. Try tapping it with a hammer.
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Old 11-13-2013, 03:26 PM   #29
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I hit it hard with a hammer with all the screws off but the top one so the cover doesnt fall into the drain pan and it still wont come off
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Old 11-13-2013, 03:47 PM   #30
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I hit it hard with a hammer with all the screws off but the top one so the cover doesnt fall into the drain pan and it still wont come off
Wack it harder.
Maybe try getting a hammer and hitting it with a piece of wood in between the cover and hammer.
You'll be able to hit it harder then.

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