It is never pleasant to hear a sound on your car that you don’t know where it comes from. You may be questioning what to do when you detect a reversing gear noise that continues on your Infiniti QX80? Any gearbox trouble can be critical, but before making sure, it is better to do a few checks. Our team has written this document to support you eliminate it. First, we will see what the origins and the different gearbox noises can be on Infiniti QX80, and second, what are the solutions available to you.
Classical reverse Infiniti QX80 noises and some tips to protect your gearbox
Why does the reversing of my Infiniti QX80 make a different noise from my other speeds?
De facto, adding all gears, bearings and pinions into a gearbox is a difficult process. The sound generated by the reversing of your Infiniti QX80 is logical. It can be explained in a fairly simple way. Indeed, the gears used for conventional speeds (1st to 5th or 6th) are so-called “helical” gears (oblique gears) . The use of such a pinion makes the noise caused by the gears less important than with spur gears employed for the reverse gear.
Tips to limit wear on your clutch and gearbox
- Don’t give a big boost:
Certainly, if you kick the throttle hard when you are in reverse or when you put the car in the revs, you risk to burn your clutch or gnawing at the gearbox pinions. - Never reverse while the car is in motion or vice versa:
Reversing the direction of operation of the gearbox during operation is a very bad plan. Indeed, the pressure you will exert on the gears will be monumental and you will generate a premature wear and tear of the gears. You can even break the gears of your gearbox at speed by doing so. It will therefore be completely usual if you hear a reverse noise on your Infiniti QX80 if you shift gear under these conditions.
Several Infiniti QX80 reversing noises and their triggers
Finally in this section, we will move on to what you are probably most curious about in this content, to find out about the origin of reversing noise on Infiniti QX80. Here are the 3 typical sounds you may be victim of.
I notice a grinding noise when starting in reverse gear
If you hear a grinding noise when you start in reverse with your Infiniti QX80, it may be the engine mounts that are tired. In fact, when the engine is in reverse gear, due to the pinions we saw above the vibrations made by the gearbox are higher and it is therefore plausible that due to their wear the silentblocks no longer absorb the engine vibrations well. In this case, do not hesitate to check out this article for more details about strut mount noises on Infiniti QX80.
An increased reverse knocking noise on Infiniti QX80X
If you are subject to a knocking noise when you are in reverse with your Infiniti QX80 and this noise tends to amplify as you gain speed. It is plausible that you are going through a serious trouble that needs to be fixed rather quickly before destroying your entire gearbox. Indeed, an intensifying rattling noise means that the gears are damaged. If they are, debris will spread to the rest of the box and damage other gears in short order. Take your car to your mechanic quickly or browse this content about gearbox noise on Infiniti QX80 for more details.
I hear a noise when I go in reverse
Listening a noise when you shift into reverse is normal and linked to the gears and sprockets used in the gearbox. If, on the other hand, you have the feeling that your Infiniti QX80 reverse gear makes more noise than before, it is plausible that filings have been made and are moving around in it. It is therefore time to empty the box.
