2007 GT Rear suspension concern?

[BM08]

Hello I’m new to this but I recently bought a 07 mustang gt 5 speed and it ran great the first but then out of nowhere my control arms start to creak and knock so I bought some on American muscle and replace them but see now on the highway when I let of the throttle I feel like it wobbles a bit in rear and I’m a bit concerned now also I changed the rear shocks but now the rear feels like it falling down like a rock more then it did before at first it didn’t feel like that could that be the shocks are bad quality? If anyone has tips that I should know please let me know it’s my first mustang and I want it to last thank you

 

[Samos3]

Did you pump the shocks in and out several times before installing? If not, pull it out and do so. Might have to stand it up on the ground and use your weight to compress it. This sometimes needs to be done if they have been stored laying down for awhile. The shock resistance should feel pretty much the same in and out.
If it feels easier compressing and does not get better, the shock is probably bad. Same for extension (rebound).

 

[BM08]

Oh I only compressed it like 3 times if I remember correctly

 

[BM08]

But I’ll try that tomorrow

 

[Samos3]

It's a guess, but worth checking.

 

[Dino Dino Bambino]

Hello I’m new to this but I recently bought a 07 mustang gt 5 speed and it ran great the first but then out of nowhere my control arms start to creak and knock so I bought some on American muscle and replace them but see now on the highway when I let of the throttle I feel like it wobbles a bit in rear and I’m a bit concerned now also I changed the rear shocks but now the rear feels like it falling down like a rock more then it did before at first it didn’t feel like that could that be the shocks are bad quality? If anyone has tips that I should know please let me know it’s my first mustang and I want it to last thank you

You need to torque down all the suspension bolts/nuts you used with the full weight of the car on its wheels. They may loosen and cause the symptoms you've described if you only tightened them with the suspension in full droop.

 

[BM08]

Does it count if I lift the rear with a jack?

 

[07 Boss]

Does it count if I lift the rear with a jack?

You can either use ramps or use some jack stands under the axle. You can always lift the rear end with a jack but make sure that is not the only thing supporting the car.

Also check out your bushings on the upper arm and your panhard bar. Failed bushing here can also cause a wobble or unstable feeling.

 

[BM08]

That’s what I had done choked front wheels and jack stands in the back then lifted with jack to tighten

 

[07 Boss]

That’s what I had done choked front wheels and jack stands in the back then lifted with jack to tighten

You're good, as long as the suspension was loaded.

 

[BM08]

okay but quick question the upper control arm bushing seem to rip apart after a couple days drive could that have been that u did something wrong?

 

[Samos3]

Is there an inner metal sleeve in there?

 

[Midlife Crises]

The wrong type of grease will destroy the polymer and it does look like the inner sleeve is missing.

 

[BM08]

It was in there when I was installing

 

[MasterofDisaster]

That upper control arm bushing looks nasty. Polyurethane is not compatible with all greases. Looks like you need a new bushing up there.

The one you're showing is where the arm bolts to the body/bracket, right? There's a sleeve at the differential, but I don't remember a sleeve up at the body/bracket.

 

[BM08]

This is the one I bought

 

[BM08]

.

 

[BM08]

Hello I’m back so wobble is still here and my new control is already ripping the bushing I’m at a lost right now

 

[Samos3]

Pics needed.
Also, how is your panhardbar and its bushings. Looking for side to side movement of the whole axle, maybe the bar is loose/bent? If its an adjustable one, is it adjusted correctly?

 

[BM08]

It is adjustable kinda regret it I don’t know the correct way to adjust I pretty much eye balled it