Rear Squeak/Creak

[wildcatgoal]

Why are these suggestions made secret?

Sponsored

 

[Enzo]

Why are these suggestions made secret?

Agreed! I also have this same noise from when i taking off. Its very annoying and makes it annoying to drive the car.

 

[rakin.it.in]

Why are these suggestions made secret?

Agreed! I also have this same noise from when i taking off. Its very annoying and makes it annoying to drive the car.

Below is what was shared with me by MustangCollector. I hope he doesn't mind me sharing but I'm sure he didn't mean to be secretive about it. Perhaps sending separate specific to my mods.

"1. it appears you have the Eibach kit, did you use the included bumpstops?

I also grease the upper and lower rear rubber spring isolators always now, we found the springs tend to move and vibrate causing a chirp effect, super annoying and make sure the springs are seated properly in their seat

2. Did you lower the subframe down to do the spring install? if you did please lower again and spray some lithium grease on the top of the subframe bushings, make sure you properly torque the subframe bolts to 130lbs with a really good torque wrench, dont rely on a breaker bar or air gun, do one side at a time do not drop the entire frame at once

3. another common issue is the rear shocks tend to "side load" we have seen this with many of the coilover kits and the OEM stuff when they are removed, the shock has some mounting tolerance to it what we usually do is let the rear suspension droop with no load, position the shock in place with the top and bottom bolts then we place a jack under the rear lower control arm and jack the shock into place until the upper mount hits those pins on the mount, we then torque the top bolts then the bottom. while your at it make sure the nut on the shock that holds itself to the mount is tight, spray some grease on the bumpstop

if you do all of this you should not have one single peep coming from the car."

 

[wildcatgoal]

Anyone taking bets that those fixes don't solve it?

I'll hold the cash. (You may not get any of it back.) ;)

Hopefully that works!!!!!!!! Makes sense.

 

[BMR Tech]

It makes the sound of a stressed and possibly torn and bound up rubber bushing....but seems too loud for that. Hard to tell on video.

Could also be very sight metal on metal shifting.

I will be watching to see what the verdict is.

 

[Enzo]

Yeah I'm also having the same squeaking noise and it's driving me crazy. I've tried removing the vertical linkss and nothing. However this might help. I noticed when I swapped out the camber arms to the steeda ones the noise went away immediately and then I got the car aligned and the noise came back afterignment.

 

[MustangCollector]

if my suggestions do not solve the issue i will then 100% say it is the progressive spring upper coils rubbing and oscillating as the IRS arches during travel, check carefully for any signs of wear to the gray powerdercoat on the Eibachs upper and lower coils if this is what all this is coming from, all i can say is throw them in the trash and get some BMR springs and don't look back. almost every progressive spring i installed on my car or friends cars have given us noise issues on our rutted NY roads.

 

[SpeedLu]

if my suggestions do not solve the issue i will then 100% say it is the progressive spring upper coils rubbing and oscillating as the IRS arches during travel, check carefully for any signs of wear to the gray powerdercoat on the Eibachs upper and lower coils if this is what all this is coming from, all i can say is throw them in the trash and get some BMR springs and don't look back. almost every progressive spring i installed on my car or friends cars have given us noise issues on our rutted NY roads.

I have zero noise issues with my progressive springs.

 

[BMR Tech]

I deal with noisy springs a lot.

Many of the progressive designs allow noise due to the springs kissing during suspension movement. The rubber within the cradles can actually make the issue more noticeable from what we have found.

It is hit or miss. Some Progressive springs will chatter and groan, some will not. But it is well documented right here on this forum, the noises that "can" occur.

 

[SpeedLu]

Price of comfort I guess. What reasons have you found for why some rub and some do not?

 

[BMR Tech]

Well, from what I have seen and dealt with - almost all of them rub.

Some just makes noises and some do not.

If you look at a Progressive spring, most, you will see they come with isolators where the softer rates transition to the stiffer rates. The reason is due to that portion of the spring being the loudest when it "kisses/rubs/touches"

I would share a bunch of pics from people I have dealt with - but they are non-BMR springs, so I don't want people to get the wrong idea. ;)

 

[BMR Tech]

Without going into too much detail, I think this image that TRD uses for their spring insulators, explains it.

http://www.trdparts.jp/english/parts_insulator.html

 

[SteedaTech]

Had the Steeda Engineers listen to the video, and they are referring, that noise to

possible "brake groan"

 

[Todd15Fastback]

Some of the 2015 mustangs are having rear wheel bearing issues the last 2-3 months. Lots of those issues have been posted on the numerous S550 groups in the last month or so.

When jacking up the car, have you grabbed your drivers side wheel to see if there is any play or back and forth movement? If the wheel is not firm with zero movement you might have a wheel bearing issue.

 

[BMR Tech]

Had the Steeda Engineers listen to the video, and they are referring, that noise to

possible "brake groan"

I was thinking the same thing last night when listening....based on the increase in sound that seemed as if it matched the wheel revolutions.

Then I saw him say he checked those already.

Curious to see what he finds out.

Sponsored