HELP! Loud bang from rear end. Pass rear wheel wobble - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > YJ Jeep Wrangler Forum > YJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-09-2014, 12:59 PM   #1
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
HELP! Loud bang from rear end. Pass rear wheel wobble

Just acquired a 93 YJ with the 4.0 motor - 5 spd manual. After about a 20 trip down the highway we turned off on a side road and we doing about 25 miles an hour when BOOM! Something popped in the rear end and gave us quite a jolt. I immediately pulled over and inspected the undercarriage/driveline and all appears well though I do seem to have excessive pass rear wheel wobble. New to jeeps - any ideas? Any/all suggestions are greatly appreciated.

ibbypop is offline   Quote Quick Reply
Old 02-09-2014, 01:05 PM   #2
Supporting Member

WF Supporting Member
 
jeepers29's Avatar
 
Join Date: Feb 2011
Location: Georgetown, Texas
Posts: 2,448
Wobble on any tire is not good. Sounds like something gave up the ghost in your rear end. May want to pull that diff cover and give it a look see.

__________________
98 TJ 4i in currie with Currie bars front and rear
2014 JKUR AMP"D,Ace slider,BFG AT/KO's 33's
Ace Tire carrier/ rear bumper,LOD Mid width front bumper

I love my country. That's why I despise the government.
jeepers29 is offline   Quote Quick Reply
Old 02-09-2014, 01:08 PM   #3
Jeeper
 
0III0forlife's Avatar
 
Join Date: Mar 2012
Location: Ridgway, Pa.
Posts: 2,475
Either a broken axle shaft, which means the rear wheel will leave the jeep if driven, or a bad outer bearing. Could be broken wheel studs or even a bent wheel if you hit something.

You would have to explain wheel wobble better for us to understand what you are trying to say.

You can wobble the wheel by hand? or it looks like its wobbling when you move? Try jacking just that side up in the air and see if its loose or you can pull the wheel out away from the Jeep.
__________________
'87 YJ, 4.2L built and bored, 8.5" of lift, 8.8 rear, AX15/NP 231, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...
0III0forlife is online now   Quote Quick Reply
Old 02-09-2014, 01:40 PM   #4
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
Thanks all. Wheel wobble isn't overly excessive - can't wobble it by hand. Just seems to be a little more play there than before.
ibbypop is offline   Quote Quick Reply
Old 02-09-2014, 03:02 PM   #5
Moderator

::WF Moderator::
 
harleydragon's Avatar
 
Join Date: Jul 2012
Location: south georgia
Posts: 3,910
if lugs are not loose and the rim is not bent then chances are you have a bad axle bearing..you do not want to drive it like that.At this point it might just need a bearing..driving it could damage more expensive parts
harleydragon is offline   Quote Quick Reply
Old 02-09-2014, 03:29 PM   #6
Jeeper
 
Skysail's Avatar
 
Join Date: Jan 2014
Location: Chicago
Posts: 84
Mine never made a huge bang noise, but my rear wheel makes a thumping noise when I make turns. When I shake the car side to side I can here it, and I'm 99 percent sure it's the bearing. Does it make a roaring noise when you drive?
Skysail is offline   Quote Quick Reply
Old 02-09-2014, 05:54 PM   #7
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
Rim is good and lugs are tight. We limped it to a place where we could park it and called for a tow. Made a thumping noise of sorts while moving. I'll have it back at my house shortly and will dive in. Just thankful it didn't happen on the highway as that could have gotten messy. Hoping for an easy fix!
ibbypop is offline   Quote Quick Reply
Old 02-09-2014, 07:26 PM   #8
Jeeper
 
GabeTJ's Avatar
 
Join Date: Jun 2013
Location: Terryville CT
Posts: 216
You sure it's not a loose wheel? You jacked it up and shook it around? Because mine did the same thumping and wobbling, and when I checked when it was on the ground it felt snug (downward pressure) but once off the ground it rattled around like crazy.
GabeTJ is online now   Quote Quick Reply
Old 02-09-2014, 07:32 PM   #9
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
I did jack up the rear end and the tires are mounted securely. Just having a hard time wrapping my head around no visible signs of damage - our friends following 40ft or so behind us said it sounded like a cannon going off and it felt like the rear end literally came off the ground. Will know more shortly as I'm getting ready to tear into it. Thanks for all the replies.
ibbypop is offline   Quote Quick Reply
Old 02-09-2014, 08:17 PM   #10
Jeeper
 
GabeTJ's Avatar
 
Join Date: Jun 2013
Location: Terryville CT
Posts: 216
Muffler blow up and now bouncing/rattling around?
GabeTJ is online now   Quote Quick Reply
Old 02-11-2014, 06:21 PM   #11
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
Well, mystery solved. Spider gear in the rear diff exploded and took out a good sized chunk of the carrier with it. What would cause this to happen? Is it that I'm running stock 3.55 gearing with 33's? I need a cheap fix so changing gearing isn't exactly in the picture.

Click image for larger version

Name:	ForumRunner_20140211_172054.jpg
Views:	71
Size:	102.4 KB
ID:	757433



Click image for larger version

Name:	ForumRunner_20140211_172012.jpg
Views:	65
Size:	183.2 KB
ID:	757417
ibbypop is offline   Quote Quick Reply
Old 02-11-2014, 06:41 PM   #12
Jeeper
 
0III0forlife's Avatar
 
Join Date: Mar 2012
Location: Ridgway, Pa.
Posts: 2,475
Any size above a stock tire can cause that damage on a D35 rear end. It's just an extremely light duty rear, that's all.

All it takes is romping on it 1 time when you are out playing, and you can see for yourself the destruction.

Its still an expensive fix, so you might want to invest the money now rather than again.

If it didn't hurt the ring and pinion, then you need a new carrier, and a new set of spider gears and the cost of someone to set it all in there.
__________________
'87 YJ, 4.2L built and bored, 8.5" of lift, 8.8 rear, AX15/NP 231, Tom Woods drive shafts, Flat fenders, 12,000LB winch, Custom bumpers, Rattle can paint job. Never completed...
0III0forlife is online now   Quote Quick Reply
Old 02-11-2014, 06:49 PM   #13
Moderator

::WF Moderator::
 
harleydragon's Avatar
 
Join Date: Jul 2012
Location: south georgia
Posts: 3,910
cheapest way out is just to fix that one unless you can find one in a u pull it for cheap..one of my yj's has 3.55's with 33's and I like it a lot on the street
harleydragon is offline   Quote Quick Reply
Old 02-11-2014, 08:18 PM   #14
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
Thanks guys. Although ultimately I'm set on a Dana 44, we have some big expenses coming up and the wife won't be having that right now. I've found a Dana 35 complete axle with 3.55 gearing for $100 that I could slap on to get me by, but are there any compatability issues I should be aware of before dropping the cash? I think the axle is off of a 2001 TJ with 68k miles. Thanks again and in advance foe everyone's input. You guys have been an incredible resource while I learn my way around my YJ.
ibbypop is offline   Quote Quick Reply
Old 02-11-2014, 08:20 PM   #15
Jeeper
 
GabeTJ's Avatar
 
Join Date: Jun 2013
Location: Terryville CT
Posts: 216
TJ axle is set up for coils in back not leaf springs like the YJ has
GabeTJ is online now   Quote Quick Reply
Old 02-11-2014, 08:34 PM   #16
Jeeper
 
87YJnTX's Avatar
 
Join Date: Dec 2010
Location: texas
Posts: 238
don't get the D35 go to ford 8.8 wont be to hard of a swap and usually pretty cheap
__________________
87 YJ ....long term build do to 5 kids, several reptiles, couple of EXs and a wife with a notion she gets what's left over of my paycheck.
87YJnTX is offline   Quote Quick Reply
Old 02-11-2014, 08:35 PM   #17
Jeeper
 
87YJnTX's Avatar
 
Join Date: Dec 2010
Location: texas
Posts: 238
doubt the ford will have 3.55 but just don't use 4x4 until you regear either axle will get you by for awhile as a DD
__________________
87 YJ ....long term build do to 5 kids, several reptiles, couple of EXs and a wife with a notion she gets what's left over of my paycheck.
87YJnTX is offline   Quote Quick Reply
Old 02-11-2014, 08:39 PM   #18
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
Thanks GabeTJ - should have seen that one coming. And 87YJnTX - I'm looking for the quickest simple fix (bolt on), but I'll research the 8.8's some more. I'd like to do it all myself and not too sure of what's involved outside of swapping for the same setup.
ibbypop is offline   Quote Quick Reply
Old 02-11-2014, 10:08 PM   #19
Jeeper
 
GabeTJ's Avatar
 
Join Date: Jun 2013
Location: Terryville CT
Posts: 216
As far as I know, any model YJ D35 or 44 should bolt right in? If I came off as smug before my bad, didn't mean to
GabeTJ is online now   Quote Quick Reply
Old 02-11-2014, 10:27 PM   #20
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
GabeTJ - no apology needed. I just hadn't thought through the TJ setup in the rear. Thanks again for the reply.
ibbypop is offline   Quote Quick Reply
Old 02-11-2014, 11:44 PM   #21
Jeeper
 
Hawaii5O's Avatar
 
Join Date: Dec 2013
Location: Schofield Barracks, HI
Posts: 155
Quote:
Originally Posted by ibbypop View Post
Thanks GabeTJ - should have seen that one coming. And 87YJnTX - I'm looking for the quickest simple fix (bolt on), but I'll research the 8.8's some more. I'd like to do it all myself and not too sure of what's involved outside of swapping for the same setup.
Just a little cutting, grinding and welding. Nothing too major involved. But like above mentioned, you'd have to regear the front as well.
__________________
I am a man of simple tastes easily satisfied with the best” ― Winston Churchill
Hawaii5O is offline   Quote Quick Reply
Old 02-12-2014, 05:47 AM   #22
Jeeper
 
StanF's Avatar
 
Join Date: Jan 2013
Location: Austin, TX
Posts: 658
Options:

1) Assuming your carrier isn't very damaged, just put in another set of spider gears. It will not require new gear setup, and should be quick and easy. I'd get a set of spider gears from the wrecking yard. This is somewhat risky, and you may have issues down the line. Thing of this as an interim solution while you plan for the long term, correct solution.

2) Find a bolt-in Dana 35 with the correct gear ratio, off of a YJ only (not a TJ). This might be tough to find, but would be an easy swap. The problem is it's still a Dana 35, and with 33" tires, you are stressing it beyond its limits.

3) Do the Ford 8.8 swap. Look at the details in my build thread - I have full costs, info, etc. 3.55 was an Explorer ratio, so you can find them. You need to be able to weld or have a friend that can weld. It will be bulletproof, and is a pretty easy swap.

They never made Dana 44s for YJs, so there's no bolt-in Dana 44 solution that is cheap and easy.

You are overloading the Dana 35 with 33" tires. I'd recommend the 8.8 as soon as practical for you. Or expect more issues down the road.
__________________
1995 YJ, 4.0L, AX15, 2" Zone Lift; Lock Right in Dana 30; 8.8 LSD; Flat Tummy Tuck, 1" Daystar BL; 1" MORE MML; 32" BFG ATs Tires;

StanF Tummy Tuck, Ford 8.8, Gas Tank Lift, Rocker Guard Fab, Ammo Can Console
StanF is offline   Quote Quick Reply
Old 02-12-2014, 10:58 AM   #23
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
Thanks StanF - great info and a fantastic write up on the 8.8 swap.
ibbypop is offline   Quote Quick Reply
Old 02-12-2014, 11:37 PM   #24
Newb
 
Join Date: Feb 2014
Location: Fairborn, Oh
Posts: 6
I agree With stan the Ford 8.8 is the best thing I have done to my YJ. I went with 4.10 gears in the rear until I was lucky enough to find a 4 cylinder YJ front to match.
__________________
JEEP (definition) a project that is never finished.
Jermaweld91 is offline   Quote Quick Reply
Old 02-13-2014, 12:41 PM   #25
Jeeper
 
GabeTJ's Avatar
 
Join Date: Jun 2013
Location: Terryville CT
Posts: 216
I hate to be the guy to add another question to the thread but here goes. If I buy a Dana 44, it has to match gear ratios with the front dana 30, otherwise the 30 will blow up if I put it in 4 wheel correct? I would have to regear the front to match the back?
GabeTJ is online now   Quote Quick Reply
Old 02-13-2014, 01:33 PM   #26
2.5L SYMPATHIZER

WF Supporting Member
 
W5KVV's Avatar
 
Join Date: Oct 2013
Location: S.E. Oklahoma
Posts: 816
Yup, both the front & rear gear ratios have to match. Won't hurt the diffs if you're in 2wd, but you won't make it 5 feet in 4wd before the transfer case explodes if the ratios are different.
__________________
1995 Rio Grande - 2.5 - AX5 - 160k -
4"RC - 1/2"booms - 33's -




W5KVV is offline   Quote Quick Reply
Old 02-13-2014, 01:42 PM   #27
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
Thanks for all the input, guys. I was close to pulling the trigger on another D35, but I'm now convinced that the 8.8 is the way to go. Best part is I think I'll be able to do it on the cheap as the axles are readily available at my local pick and pull at the gear ratio I need at a steal of a price. This is going to keep my new toy off the trails a little longer but it will be worth it in the long run.
ibbypop is offline   Quote Quick Reply
Old 02-13-2014, 01:59 PM   #28
Jeeper
 
StanF's Avatar
 
Join Date: Jan 2013
Location: Austin, TX
Posts: 658
Quote:
Originally Posted by ibbypop View Post
Thanks for all the input, guys. I was close to pulling the trigger on another D35, but I'm now convinced that the 8.8 is the way to go. Best part is I think I'll be able to do it on the cheap as the axles are readily available at my local pick and pull at the gear ratio I need at a steal of a price. This is going to keep my new toy off the trails a little longer but it will be worth it in the long run.
Great decision!
__________________
1995 YJ, 4.0L, AX15, 2" Zone Lift; Lock Right in Dana 30; 8.8 LSD; Flat Tummy Tuck, 1" Daystar BL; 1" MORE MML; 32" BFG ATs Tires;

StanF Tummy Tuck, Ford 8.8, Gas Tank Lift, Rocker Guard Fab, Ammo Can Console
StanF is offline   Quote Quick Reply
Old 02-13-2014, 03:08 PM   #29
Jeeper
 
Hawaii5O's Avatar
 
Join Date: Dec 2013
Location: Schofield Barracks, HI
Posts: 155
Quote:
Originally Posted by ibbypop View Post
Thanks for all the input, guys. I was close to pulling the trigger on another D35, but I'm now convinced that the 8.8 is the way to go. Best part is I think I'll be able to do it on the cheap as the axles are readily available at my local pick and pull at the gear ratio I need at a steal of a price. This is going to keep my new toy off the trails a little longer but it will be worth it in the long run.
You could knock it out in a weekend.
__________________
I am a man of simple tastes easily satisfied with the best” ― Winston Churchill
Hawaii5O is offline   Quote Quick Reply
Old 03-01-2014, 01:40 PM   #30
Jeeper
 
ibbypop's Avatar
 
Join Date: Feb 2014
Posts: 32
Well, it's done. I was lucky enough to have the PO I bought the Jeep from offer to help out with the welding. Paid 150 for the 8.8, 100 for the Ruff Stuff suspension hardware (great stuff, btw - bulletproof) and ~50 for misc brake hardware. To say that I'm impressed with this upgrade would be a massive understatement. Doing some light wheeling tomorrow up in the AZ high country and won't have that lingering question of whether or not the D35 will make it home Thanks for all the help, guys!

ibbypop is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 01:42 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC