Experiencing noises from your automobile often is never reassuring, so listening noises on your Scion xB suspensions when you go over a speed bump can be stressful. This symptom may be a sign of a minor issue as well as a warning of a much larger repair to come. Whatever the case, it is necessary to check the source and take the necessary actions to resolve the issue, it is with this goal in mind that we wanted to write this document to support you see more clearly. We will first see the possible explanations for a crack when the speed bump passes, then, what can be the cause of a squeaking noise when a speed bump is being passed and finally what to do if you have another noise when a speed bump is passed.
Suspension cracking noise Scion xB
Check Scion xB suspension
If you encounter a suspension noise when you pass a speed bump on your Scion xB, and it is categorized by a “clack” or cracking, it is highly plausible that your suspension block is the origin of it. Indeed, it may be the suspension cups, which, when they are old, have the rubber (silentblock) that acts as a buffer and shock absorber for the upper part of the suspension that no longer fulfils its job during small bumps that compress the suspensions. To check if this is the issue that concerns you, take a dented road and pay attention to the noise coming from your front axle as you pass over holes. If it is indeed the cups, think of replacing them quickly or you may damage other parts and have to make more important fixes.
Check the cardan shaft
If you are here because you have searched for “Scion xB suspension noise” and the suspension is not the cause of your problem, it may be that the cardan shaft is responsible. Indeed, when the cardan bellows get outdated and the dirt/dust builds up inside them their functions is deteriorated and it is possible to experience a sound when they are in torsion. To check this, you can try both types of torsion, first vertical with suspension compressions on the speed bump passages, and horizontal when you are going to make a turn at low speed. If it cracks in these two situations you should consider swapping it or them. If you have the feeling that this noise is more like a a loud noise on Scion xB, don’t hesitate to visit this document.
Check steering hinges/stabilizer bar
Finally, when you find out a suspension noise when your Scion xB passes over a speed bumps, it is imaginable that the hinges or the stabilizer bar are responsible. Simply like the gimbals, the steering part is mobilized when you adjust direction. If this is your situation, the components that may have been affected by regular wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the origins of your noises, to check it, place it under the automobile and apply twists on each of its elements to check that there is no particular play on one of them, they are meant to resist you quite strongly over their entire travel. Please remember to take your vehicle to your auto technician or replace them if they are involved.
squeaky noise speed bump Scion xB
Check the stabilizer bar
If, however, you have a noise that is more like a squeak when you go over a speed bump with your Scion xB, it is plausible that it is the stabilizer bar itself that is concerned. Indeed, abnormal/pronounced wear of the latter can cause uncommon friction which can provoke this squeaking noise. Bear in mind to check by passing under your automobile the condition of the paint on your bar which will reveal if there is friction. Second plausible explanation, it may be your stabilizer bar silentblocks that are dry and create noise, in which case take them off from the cradle and grease them, this should fix the issue.
Check engine silentblocks
Finally, last case that we can check together, it is the engine silentblocks, actually, these silentblocks operate as pads/shock absorbers between the engine and the cradle of the automobile, a pronounced fatigue of these will generate a subsidence and therefore a space between the engine and the silentblocks, it may appear that a squeaking noise appears when you pass a speed bumps or any holes with your Scion xB. To change them go to your mechanic.
Other speed bump noise Scion xB
If, even though all its assumptions, you still can’t find the source of the noise your Scion xB makes when you pass a speed bump, we suggest you to refer to this content on a loud noise on Scion xB or to visit your auto technician in order to carry an in-depth check on your Scion xB and discover this issue.
