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Old 10-06-2015, 11:37 AM   #1
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Rear end squealing

Hey so ive had a squealing issue with my rear end for quite a bit now, it has gotten really loud and annoying/embarrassing. Before a little road trip i cleaned the crap out of my rims and today i noticed that the rear drivers side wheel is WAY more dirtier than all the other wheels, looks like brownish filth dust( i think its brake dust). Could brakes be causing squealing that sounds like a bearing? What are some other components that could be causing squealing in the rear end? Im gonna put the rear and on jack stands later today and let the wheels spin to kinda break down where the squealing could be coming from. Thanks


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Old 10-06-2015, 12:14 PM   #2
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It could be that the caliper is sticking on that wheel.
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Old 10-06-2015, 01:31 PM   #3
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Sounds like a sticking caliper to me. My car did this over the summer for one night then hasnt done it again. But when it did the brake dust was very much more noticeable on that rear wheel.

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Old 10-06-2015, 01:33 PM   #4
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i will take a look at the rear brake calipers this weekend and maybe grease the sliding pins to see if that helps
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Old 10-06-2015, 05:22 PM   #5
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Does the rim get hot during the drive? That's a sure sign of a sticking caliper. Stuck slide pins are typical causes of sticking calipers.

It's an easy fix. Just install and lube new slide pins.
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Old 10-11-2015, 10:50 AM   #6
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UPDATE

ok so i just put the rear end on jack stands and put the car in 3rd gear to spin the wheels, noticed a slight wobble in the rim, took the wheels of and it seems like both sides are not spinning straight
Brakes are kind of dragging on drivers side which explains the amount of brake dust thats on the rim, passenger side squealing, sounds also like the brakes, so next weekend im going to get the rotors cut and putting new pads in. Now that brace on the pumpkin where you jack up the car (i am going to tighten the 2 bolts today while the car is up in the air, whats the torque spec for those 2 bolts?) is also loose, is that a reason for the axles not to spin straight? i attached 2 links to a video of the whole situation.

Please help



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Old 10-11-2015, 11:47 AM   #7
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Just took off the brakes and both axles are wobbling inside out. What could be the causes of this? And also the squealing is coming from the passenger brakes. Will replace pads. Can these rotors still be cut or do i need new ones? Click image for larger version

Name:	ImageUploadedByMustang Evolution1444582023.204361.jpg
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ID:	192177

So do i need new axles? Kinda weird that both side wobble at the same time.


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Old 10-11-2015, 01:24 PM   #8
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One more with the wheels on

Any ideas?
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Old 10-11-2015, 02:12 PM   #9
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Either those axle shafts are bent or there is something loose on those rear hubs. Can't imagine it being both at the same time though. Been doing hard launches and clutch drops??


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Old 10-11-2015, 02:17 PM   #10
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Either those axle shafts are bent or there is something loose on those rear hubs. Can't imagine it being both at the same time though. Been doing hard launches and clutch drops??


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Not really no hard launches, and if i do punch it i cant get traction anyways because of these ****ty sumitomo 315 tires, worst tire by far.

Now i did have 4.10 gears installed like 7 months ago and the mechanic also replaced the axles because the bearings on the old ones were so bad they apparently damaged the old axles..
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Old 10-11-2015, 02:21 PM   #11
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It would be easier to tell if you would have held the camera steady, but it sure as hell looks like both of the axles are bent.
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Old 10-11-2015, 02:23 PM   #12
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Not really no hard launches, and if i do punch it i cant get traction anyways because of these ****ty sumitomo 315 tires, worst tire by far.

Now i did have 4.10 gears installed like 7 months ago and the mechanic also replaced the axles because the bearings on the old ones were so bad they apparently damaged the old axles..
I would take it back to him and see what he thinks about it.
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Old 10-11-2015, 02:28 PM   #13
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It would be easier to tell if you would have held the camera steady, but it sure as hell looks like both of the axles are bent.
Just found the receipt of the 4.10 install and the axles are still under warranty because it was shop supplied, idk what kind of ****ty axles they used but i will give them a call tomorrow and see what they have to say to the whole situation. So are you pretty positive on the bent axles? is it unusual that both bent at the same time?
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Old 10-11-2015, 02:39 PM   #14
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Just found the receipt of the 4.10 install and the axles are still under warranty because it was shop supplied, idk what kind of ****ty axles they used but i will give them a call tomorrow and see what they have to say to the whole situation. So are you pretty positive on the bent axles? is it unusual that both bent at the same time?
I would think that it is VERY unusual. But since both were replaced at the same time, perhaps it is a manufacturing defect?
From what I saw on the video, it definitely looks like there is noticeable run out on the axle flanges. You can see it with the naked eye.
Show the mechanic the video.
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Old 10-11-2015, 02:44 PM   #15
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I would think that it is VERY unusual. But since both were replaced at the same time, perhaps it is a manufacturing defect?
From what I saw on the video, it definitely looks like there is noticeable run out on the axle flanges. You can see it with the naked eye.
Show the mechanic the video.
will do. Could there be any other causes other then bent axle shafts that could cause the wobbling? Is it safe to drive like this right now?
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Old 10-11-2015, 02:58 PM   #16
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will do. Could there be any other causes other then bent axle shafts that could cause the wobbling? Is it safe to drive like this right now?
I don't know of anything else that would cause that.

If it still drives and stops alright, then I think that it is safe to drive. You have to be the final judge on that matter though.

And which bolts are you referring to, that need tightening?
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Old 10-11-2015, 03:02 PM   #17
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The 2 bolts that hold the dogbone in place right under the rear diff pumpkin.


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Old 10-11-2015, 03:13 PM   #18
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I don't see a a torque spec for that so I would just make it good and tight.
Maybe 60-70 ft-lbs.
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Old 10-11-2015, 03:30 PM   #19
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I don't see a a torque spec for that so I would just make it good and tight.
Maybe 60-70 ft-lbs.
Ok thanks for all the help i´ll report back tmrw with what the mechanic said. thanks!
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Old 10-13-2015, 12:51 AM   #20
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Just took off the brakes and both axles are wobbling inside out. What could be the causes of this? And also the squealing is coming from the passenger brakes. Will replace pads. Can these rotors still be cut or do i need new ones? Attachment 192177

So do i need new axles? Kinda weird that both side wobble at the same time.


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I would just get new rotors, i know their more expensive but you will have piece of mind. I would say yours are border line of being ok to be turned. Take them to a auto parts store that does that and have them inspect them. I always have just put new rotors on my cars when doing the brakes and it always has worked out very well for me.

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Old 10-15-2015, 12:37 PM   #21
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Update

So i took the axles out and gave them to the mechanic i got them from, he returned them and got new ones. Last night i put the new ones in and now both wheels are spinning completely straight. Guess i bent both axles lol. Thanks for all the help and advice.


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Old 10-15-2015, 10:37 PM   #22
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Just toooooo much torque, huh?!! Jk

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Old 10-16-2015, 12:05 AM   #23
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one more with the wheels on

any ideas?
when you put those spacers on did you remove that thin clip that holds the rotor on? Fixed one last week by removing those clips. They are there to hold rotors on while going down the assembly line only.

As for your rear-end squeal stay away from spicy food and beans for a few days
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Old 10-16-2015, 12:10 AM   #24
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when you put those spacers on did you remove that thin clip that holds the rotor on? Fixed one last week by removing those clips. They are there to hold rotors on while going down the assembly line only.

As for your rear-end squeal stay away from spicy food and beans for a few days

never mind just saw your axle post
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Old 10-16-2015, 11:34 AM   #25
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Did you change the rear wheel bearings, too?

I imagine the bearings could be damaged with bent axle shafts.
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Old 10-16-2015, 06:11 PM   #26
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Originally Posted by ALLYDRIVER1 View Post
when you put those spacers on did you remove that thin clip that holds the rotor on? Fixed one last week by removing those clips. They are there to hold rotors on while going down the assembly line only.

As for your rear-end squeal stay away from spicy food and beans for a few days

Love this⬆️


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