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Squeaks come from metal movement and can be hard to trace. If there has been a suspension rebuild using aftermarket springs then the diameter of the spring material will be bigger than original. This reduces the inside diameter of the spring and this in turn doesn't allow the spring to sit properly on the mount pad. Check for rust signs at the base /top of the springs and ensure that the springs have clearance inside . Next if polyurethane bushes have been used in the suspension mounts this will be a source of noise as it will not flex and any movement will produce a noise. Noise is from dry so look for telltale rust marks to identify the part that is moving when it should not be
Have all the rear suspension rubber bushings inspected, I suuspect that one or more are in need of replacement. Pay special attention to the sway bar bushings
Any noise to be identified need a perfect OBSERVATION of the spot of generation. Have the test drive with someone at the wheels while you confirm the spot - front or rear. now touch the brakes to see if the noise cuts off or increases. Now push the car vigorously up and down to check the suspension. If noise is heard it can be the suspension. Now it will be good to have the car up a ramp to have a first hand check on the suspension, the links, the bushes. make sure there is no metal touching the mudguards/ Tyre's.
Now jack up the rear wheel one by one and turn them to hear any squeaking. if so remove tyre and wheel assembly to clean and reset the assembly.
If not the rear suspension links /bushes/ shock-absorbers must be removed and reset.
This would most likely be suspension related, but to find it you need to safely jack up the car and actuate the suspension in the same way, to make the squeak, Look for shiny spots where something may be rubbing, look closely and listen at rear shocks and springs...
Hi,
Check all your rear sway bar mount bolts, your trailing arm bushings, the torque arm bolts.Also check the spare and jack those could be loose .
Hope this helps
Thanks
Smith.
I had the same problem. I had the control arms repaced in the back when my car was still under warranty. See if a mechanic can take a look at it to be sure.
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