Experiencing noises from your car regularly is never comforting, so hearing noises on your Infiniti QX80 suspensions when you go over a speed bump can be disturbing. This symptom may be a sign of a small problem as well as a warning of a much larger repair to come. In any case, it is necessary to check the source and take the necessary actions to solve the problem, it is with this goal in mind that we wanted to write this content to support you see more clearly. We will first see the possible causes for a crack when the speed bump passes, then, 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-qx80

Suspension cracking noise Infiniti QX80

Check Infiniti QX80 suspension

If you notice a suspension noise when you pass a speed bump on your Infiniti QX80, and it is characterized by a “clack” or cracking, it is highly plausible that your suspension block is the cause of it. In fact, it may be the suspension cups, which, when they are dead, 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 examine if this is the problem 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 replacing them fairly quickly or you may affect other parts and have to make more important auto repairs.

Check the cardan shaft

If you are here because you have looked for for “Infiniti QX80 suspension noise” and the suspension is not the cause of your problem, it may be that the cardan shaft is responsible. In fact, when the cardan bellows get outdated and the dirt/dust accumulates inside them their operation is deteriorated and it is possible to experience a noise when they are in torsion. To examine 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 cases you should consider changing it or them. If you have the feeling that this noise is more like a a loud noise on Infiniti QX80, don’t hesitate to visit this article.

Check steering hinges/stabilizer bar

Finally, when you find out a suspension noise when your Infiniti QX80 passes over a speed bumps, it is possible that the hinges or the stabilizer bar are responsible. Exactly like the gimbals, the steering part is mobilized when you vary direction. If this is the case, the components that may have been destroyed by regular wear and tear or impacts (e. g. sidewalks). The steering hinges, the stabilizer bar hinges. can be the causes of your noises, to examine it, position it under the automobile and apply twists on each of its elements to examine that there is no particular play on one of them, they are expected to resist you quite strongly over their entire travel. Keep in mind to take your vehicle to your mechanic or swap them if they are involved.

squeaky noise speed bump Infiniti QX80

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 Infiniti QX80, it is plausible that it is the stabilizer bar itself that is involved. In fact, abnormal/pronounced wear of the latter can cause uncommon friction which can provoke this squeaking noise. Please remember to examine by going under your automobile the condition of the paint on your bar which will tell us if there is friction. Second plausible point, it may be your stabilizer bar silentblocks that are dry and provoke noise, in which case remove them from the cradle and grease them, this should fix the problem.

Check engine silentblocks

Finally, last possibility that we can examine together, it is the engine silentblocks, in fact, these silentblocks work as pads/shock absorbers between the engine and the cradle of the car, a noticable weakness of these will create a subsidence and therefore a space between the engine and the silentblocks, it may appear that a squeaking noise comes up when you pass a speed bumps or any holes with your Infiniti QX80. To swap them go to your technician.

Other speed bump noise Infiniti QX80

If, even though all its assumptions, you still can’t locate the source of the noise your Infiniti QX80 makes when you pass a speed bump, we recommend you to refer to this article on a loud noise on Infiniti QX80 or to visit your mechanic in order to carry an in-depth check on your Infiniti QX80 and discover this problem.