It is never pleasing to perceive a sound on your vehicle that you don’t know where it comes from. You may be questioning what to do when you notice a reversing gear noise that persists on your Mazda CX 7? Any gearbox trouble can be severe, but before making sure, it is better to do a few checks. Our team has created this document to support you resolve it. First, we will see what the origins and the different gearbox noises can be on Mazda CX 7, and second, what are the solutions available to you.
Classical reverse Mazda CX 7 noises and some tips to look after your gearbox
Why does the reversing of my Mazda CX 7 make a different noise from my other speeds?
De facto, adding all gears, bearings and pinions into a gearbox is a difficult action. The sound generated by the reversing of your Mazda CX 7 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 much 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 vehicle in the revs, you risk to burn your clutch or gnawing at the gearbox pinions. - Never reverse while the vehicle is in motion or vice versa:
Reversing the direction of operation of the gearbox during operation is a very bad practice. Indeed, the pressure you will put in on the gears will be monumental and you will develop 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 normal if you experience a reverse noise on your Mazda CX 7 if you shift gear under these conditions.
Several Mazda CX 7 reversing noises and their origins
Finally in this section, we will move on to what you are probably most enthusiastic about in this page, to find out about the origin of reversing noise on Mazda CX 7. Here are the 3 typical sounds you may be victim of.
I experience a grinding noise when starting in reverse gear
If you perceive a grinding noise when you start in reverse with your Mazda CX 7, 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 generated by the gearbox are higher and it is therefore conceivable that due to their wear the silentblocks no longer absorb the engine vibrations well. In this case, do not hesitate to check out this content for more details about strut mount noises on Mazda CX 7.
An increased reverse knocking noise on Mazda CX 7X
If you are subject to a knocking noise when you are in reverse with your Mazda CX 7 and this noise tends to amplify as you gain speed. It is conceivable that you are experiencing a serious trouble that needs to be resolved quickly before ruining your entire gearbox. Indeed, an intensifying rattling noise means that the gears are damaged. If they are, debris will propagate to the rest of the box and damage other gears quickly. Take your vehicle to your auto technician quickly or read this content about gearbox noise on Mazda CX 7 for more details.
I find out a noise when I go in reverse
Experiencing 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 Mazda CX 7 reverse gear makes more noise than before, it is conceivable that filings have been produced and are moving around in it. It is therefore time to empty the box.
