It is never enjoyable to discover a sound on your car that you don’t know where it comes from. You may be thinking about what to do when you identify a reversing gear noise that remains on your Bmw Serie 3 E93? Any gearbox problem can be serious, but before making sure, it is better to do a few investigations. Our team has made this article to support you fix it. First, we will see what the origins and the different gearbox noises can be on Bmw Serie 3 E93, and second, what are the solutions available to you.
Classical reverse Bmw Serie 3 E93 noises and some tips to look after your gearbox
Why does the reversing of my Bmw Serie 3 E93 make a different noise from my other speeds?
De facto, integrating all gears, bearings and pinions into a gearbox is a difficult exercise. The sound caused by the reversing of your Bmw Serie 3 E93 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 more quiet than with spur gears used for the reverse gear.
Tips to reduce 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. Indeed, the pressure you will exert on the gears will be monumental and you will create 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 common if you find out a reverse noise on your Bmw Serie 3 E93 if you shift gear under these conditions.
Different Bmw Serie 3 E93 reversing noises and their causes
Finally in this section, we will move on to what you are probably most enthusiastic about in this document, to find out about the origin of reversing noise on Bmw Serie 3 E93. Here are the 3 typical sounds you may be victim of.
I perceive a grinding noise when starting in reverse gear
If you discover a grinding noise when you start in reverse with your Bmw Serie 3 E93, it may be the engine mounts that are tired. Indeed, 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 possible that due to their wear the silentblocks no longer absorb the engine vibrations well. In this case, do not hesitate to consult this content for more details about strut mount noises on Bmw Serie 3 E93.
An increased reverse knocking noise on Bmw Serie 3 E93X
If you are subject to a knocking noise when you are in reverse with your Bmw Serie 3 E93 and this noise tends to amplify as you gain speed. It is possible that you are experiencing a serious problem that needs to be fixed right away before destroying 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 in short order. Take your car to your mechanic quickly or read this document about gearbox noise on Bmw Serie 3 E93 for more data.
I acknowledge 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 Bmw Serie 3 E93 reverse gear makes more noise than before, it is possible that filings have been made and are moving around in it. It is therefore time to empty the box.
