Hearing noises from your car often is never reassuring, so hearing noises on your Infiniti QX50 suspensions when you pass a speed bump can be disturbing. This indicator 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 important 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 content to help you see more clearly. We will first see the possible causes for a crack when the speed bump passes, after that, what can be the reason 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-noise-infiniti-qx50

Suspension cracking noise Infiniti QX50

Check Infiniti QX50 suspension

If you experience a suspension noise when you pass a speed bump on your Infiniti QX50, and it is characterized by a “clack” or cracking, it is highly possible 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 function during small bumps that compress the suspensions. To check if this is the issue that worries you, take a dented road and pay attention to the noise coming from your front axle as you circulate over holes. If it is indeed the cups, think of swapping them quickly or you may damage other parts and have to make more important auto repairs.

Check the cardan shaft

If you are here because you have searched for “Infiniti QX50 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 old and the dirt/dust accumulates inside them their functions is degraded 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 turn at low speed. If it cracks in these two situations you should consider changing it or them. If you have the feeling that this noise is more like a a loud noise on Infiniti QX50, don’t hesitate to consult this document.

Check steering hinges/stabilizer bar

Finally, when you recognise a suspension noise when your Infiniti QX50 passes over a speed bumps, it is possible that the hinges or the stabilizer bar are responsible. Just like the gimbals, the steering part is mobilized when you vary direction. If this is the situation, the parts that may have been damaged 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 car and apply twists on each of its components to check that there is no particular play on one of them, they are expected to endure you quite strongly over their entire travel. Keep in mind to take your vehicle to your auto mechanic or change them if they are involved.

squeaky noise speed bump Infiniti QX50

Check the stabilizer bar

If, on the other hand, you have a noise that is more like a squeak when you pass a speed bump with your Infiniti QX50, it is possible that it is the stabilizer bar itself that is involved. Indeed, abnormal/pronounced wear of the latter can cause abnormal friction which can provoke this squeaking noise. Keep in mind to check by passing under your car the condition of the paint on your bar which will show if there is friction. Second possible explanation, it may be your stabilizer bar silentblocks that are dried out and bring on noise, in which case remove them from the cradle and grease them, this should eliminate the issue.

Check engine silentblocks

Finally, last point that we can check together, it is the engine silentblocks, actually, these silentblocks process as pads/shock absorbers between the engine and the cradle of the car, a evident fatigue of these will generate a subsidence and therefore a space between the engine and the silentblocks, it may happen that a squeaking noise appears when you pass a speed bumps or any holes with your Infiniti QX50. To change them go to your auto mechanic.

Other speed bump noise Infiniti QX50

If, despite all its assumptions, you still can’t find the source of the noise your Infiniti QX50 makes when you pass a speed bump, we advise you to read this article on a loud noise on Infiniti QX50 or to visit your auto mechanic in order to carry an in-depth check on your Infiniti QX50 and find this issue.