Rear Suspension Sqeaking After Bushing Replacement, Found the Answer - not the trailing arm bushings Options

[nick mironov]

After finding one rear bushing had failed, I replaced all of the rear bushings with a new Elephant re-greaseable polybronze bushing kit (including the shafts). The rear suspension still squeaks (not the front) I was under the impression that the Elephant bearings would cure the squeaking.

What else is there that could be sqeaking?

Nick

[skeates]

Did the pitch or tone of the squeak change after you replaced the bushings? I wouldn't expect that the solid bushings are going to squeak in the same way that a rubber busing would when they bind (they don't bind and slip like a rubber bushing does). I would look elsewhere for the pesky noise. Can you recreate it by bouncing one of the rear quarters heavily by hand?

[nick mironov]

Did the pitch or tone of the squeak change after you replaced the bushings? I wouldn't expect that the solid bushings are going to squeak in the same way that a rubber busing would when they bind (they don't bind and slip like a rubber bushing does). I would look elsewhere for the pesky noise. Can you recreate it by bouncing one of the rear quarters heavily by hand?

The quality of the sound is about the same as before, but not quite so loud. It is most evident when the car is jacked up/down. It is hard to make the suspension make the squeaking sound by bouncing one of the rear quarters by hand because the suspension is very stiff - the car has 200 lb springs and a rear sway bar (V8). (I also replaced the sway bar bushings, and they are not the source of the sound).

Nick