Rear suspension creek, cannot solve the issue(solved)

[nj888]

Hey Everyone,

I have tried almost all the possible remedies I can think of but I am still getting creek/noise on the rear passenger side when I get in and out of driveway as well as going over some bumps. This is bad during the cold days anything over 75 the noise subsides, very minor. Here is the list of parts I have, the noise was there when I first got the springs and shocks installed, all other parts were after that.
BMR vertical links
Camber arm
BMR min drop spring .5 inch
Steeda active shocks

Things I have tried already.....
Swap the shocks from right to left to see if it was an issue, not the case
Checked the axle retaining nut, I tried with 200ft/lb on my torque wrench it did not budge.
Re-torqued all the bolts, vertical links, camber arm, toe link
Greased swaybars
I checked all the point did not see any play except the half shaft has minor play it moves slightly side to side.
Checked if rear seat has any issue, was not the case

Can anyone see if anything else is an issue. Any help is appreciated. Thanks

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[StangTime]

I had the same problem. Turned out it wasn't the suspension at all. It was the welds on the rear frame. Stiffening the suspension puts more strain into the body. Luckily the fix is cheap and easy.

Here's what I did: https://www.mustang6g.com/forums/th...on-creak-driving-me-crazy.181311/post-3768854

 

[nj888]

I had the same problem. Turned out it wasn't the suspension at all. It was the welds on the rear frame. Stiffening the suspension puts more strain into the body. Luckily the fix is cheap and easy.

Here's what I did: https://www.mustang6g.com/forums/th...on-creak-driving-me-crazy.181311/post-3768854

Thanks for the info, so did you added the seam sealer from the trunk or underneath. Which one did you use?

 

[StangTime]

Thanks for the info, can u use lithium grease spray?

You could try it. But fluid film has the properties for getting deep into crevices as it basically spreads itself out. You should be able to buy a spray can from any auto parts store.

 

[nj888]

You could try it. But fluid film has the properties for getting deep into crevices as it basically spreads itself out. You should be able to buy a spray can from any auto parts store.

Ok got it. Will give it a try.did you spray it from trunk or underneath?

 

[StangTime]

Ok got it. Will give it a try.did you spray it from trunk or underneath?

Underneath. Along both seams of the support beam identified by the red arrows in my picture.

 

[Cobra Jet]

If it’s not that issue noted above, then also try to check the rear diff to pumpkin bushings…. Stock rubber ones are known to rip/tear.

 

[nj888]

If it’s not that issue noted above, then also try to check the rear diff to pumpkin bushings…. Stock rubber ones are known to rip/tear.

I checked and looked fine. Here is the pic, idk why there is two holes up and down, is that by design. Also only the passenger side has holes and driver side doesnot.

 

[Dana Pants]

I had the same problem. Turned out it wasn't the suspension at all. It was the welds on the rear frame. Stiffening the suspension puts more strain into the body. Luckily the fix is cheap and easy.

Here's what I did: https://www.mustang6g.com/forums/th...on-creak-driving-me-crazy.181311/post-3768854

Several dozen thank yous. I need to try this.

My car also makes such a noise where I am convinced it’s not the suspension

 

[nj888]

So spraying the trunk area did not do anything but I actually sprayed some grease on the rear back seat that did some trick, no squeak on the bumps but I still get squeak seem to be from other area when I go in and out of the drive way.

 

[JFBullitt]

So spraying the trunk area did not do anything but I actually sprayed some grease on the rear back seat that did some trick, no squeak on the bumps but I still get squeak seem to be from other area when I go in and out of the drive way.

I had a similar noise occurring specifically at low speeds. Appeared right after I did a morning out in the mountains. Thought it was my suspension or maybe subframe, but it was definitely the rear seat. Sprayed WD-40 on all the hinges and the noise disappeared.

 

[nj888]

OK, so finally this has been resolved. The back seats were the issue on these. I spray them with Lithium grease on all three points that the seats move or is attached and well the noise is gone. I was surprised that seats could make this much noise lol. All in all after lot of hours of checking suspension it was my seat, meh. Hope this help people have issues.

 

[GrabberBargeCaptain]

If it’s not that issue noted above, then also try to check the rear diff to pumpkin bushings…. Stock rubber ones are known to rip/tear.

 

[tomservo92]

My car developed the rear squeak and I thought it was suspension related but then I found this thread. I put the rear seats down and the squeak disappeared. A few shots lithium grease on the hinges and latches fixed it. I'm glad I kept searching and found this super cheap fix!

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