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The mkiv Supra Owners Club

Creaking rear suspension or axle


Guest Cool Hand

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Guest Cool Hand

When I launch the car or back up in reverse gear, or even when I brake at very low speeds, I can hear a creaking sound coming from the rear axle area. Its not very loud, but quite noticeable from the outside (I hear it quite well when driving out of the garage and have my windows down for example). It seems to come from both sides, or directly from under the car near the rear axle. I cant really tell.

 

My car is in the workshop right now but the guys there can't seem to find what causes this really annoying sound (sounds like an old chair). They have checked the bearings, but they seem to be ok (they don't have play). They also lubed quite a bit of the suspension (incl. sway bar bushings) but it didn't go away. They can reproduce it while the car is jacked up and they pull/push the axle to the front/rear of the car.

 

Does anyone here have an idea what could cause this noise? I'm really becoming desperate here. This noise is really driving me nuts and makes this awesome car sound like some cheap, rusty 20 year old car. :(

 

I really hope you guys can help me with this problem. I'm open for any suggestion where to look for.

 

Thank you!

 

Oh yeah, if it matters: I have Eibach lowering springs, Bilstein yellow shocks (they have about 50k miles on them) and TRD sway bars.

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Guest Cool Hand

Honestly I really dont know where its coming from. I only know the guys in the work shop have a hard time locating it and are starting to give up on it since they dont want to dismantle the whole suspension.

I had my friend listen to it from the outside and he told me its coming from both sides or from directly under the car near the differential.

 

Which boot rubbers you talking about?

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they sit in the rain channels and basically stop any movement of the rear hatch. there the rear hatch arms going into the body follow this down and you will see the black rubber bushes and see if they are starting to crack. there are plenty of treads regarding just look for boot rubbers.

 

Mike

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Guest Cool Hand

Oh, I doubt its them, since I replaced them already with the newer ones.

Thats about 7 years ago, though. Can the newer ones also go bad?

 

But why does it make the sound when they pull the axle then?

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if you have replaced them already then probably not them them. although check the top and bottom ones as the top and bottom of the hatch.

 

have all the bushes been checked like the ARB ones. the only other thing would be a worn bush. if not then i'll out of ideas.

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Guest Cool Hand

Okay, the update is the following:

 

They werent even able to exactly pinpoint where the noise is coming from, its really hard to locate without driving the car. Its sure that its coming from the rear axle area, though.

They lubed everything they could.

They wanted to dismantle the suspension now and look at everything closely, but I told em to halt it for now since it will get really expensive once they do that.

 

One thing they told me, was that it often makes a really loud and rather long squeak noise when they lower the lift and the wheels are starting to touch the ground again. It might be related to that noise. I actually heard that noise myself last time I changed the oil, but thought it might be the tires scratching on the ground or some noise from the lift.

 

Does anyone know anything about this "new" noise? Any new ideas?

 

Thanks, guys.

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Guest Cool Hand

Another interesting find by myself today:

It seems like its almost completely gone when I drive the car in the rain.

Those guys at the workshop told me they lubed every rubber thing they found on the suspension, so wheres the water going where the lube didnt?

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