It is never pleasing to find out a sound on your car that you don’t know where it comes from. You may be thinking about what to do when you detect a reversing gear noise that continues on your Infiniti QX70? Any gearbox issue can be severe, but before making sure, it is better to do a few investigations. Our team has created this article to help you deal with it. First, we will see what the sources and the different gearbox noises can be on Infiniti QX70, and second, what are the solutions available to you.
Classical reverse Infiniti QX70 noises and some tips to maintain your gearbox
Why does the reversing of my Infiniti QX70 make a different noise from my other speeds?
De facto, integrating all gears, bearings and pinions into a gearbox is a difficult process. The sound generated by the reversing of your Infiniti QX70 is logical. It can be explained in a fairly simple way. In fact, 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 used for the reverse gear.
Tips to limit wear on your clutch and gearbox
- Don’t give a big boost:
In fact, 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 practice. In fact, the pressure you will exert on the gears will be significant and you will develop a premature wear and tear of the gears. You can even destroy the gears of your gearbox at speed by doing so. It will therefore be completely typical if you hear a reverse noise on your Infiniti QX70 if you shift gear under these conditions.
Several Infiniti QX70 reversing noises and their causes
Finally in this section, we will move on to what you are probably most interested in this document, to learn about the source of reversing noise on Infiniti QX70. Here are the 3 typical noises you may be victim of.
I experience a grinding noise when starting in reverse gear
If you find out a grinding noise when you start in reverse with your Infiniti QX70, 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 produced by the gearbox are higher and it is therefore possible that due to their wear the silentblocks no longer absorb the engine vibrations well. In this situation, do not hesitate to read this paper for more information about strut mount noises on Infiniti QX70.
An increased reverse knocking noise on Infiniti QX70X
If you are subject to a knocking noise when you are in reverse with your Infiniti QX70 and this noise tends to amplify as you gain speed. It is possible that you are going through a serious issue that needs to be fixed as soon as possible before destroying your entire gearbox. In fact, 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 auto mechanic quickly or browse this content about gearbox noise on Infiniti QX70 for more information.
I discover a noise when I go in reverse
Hearing a noise when you shift into reverse is normal and relating to the gears and sprockets used in the gearbox. If, on the other hand, you have the feeling that your Infiniti QX70 reverse gear makes more noise than before, it is possible that filings have been produced and are moving around in it. It is therefore time to empty the box.
