It is never pleasant to hear a sound on your automobile that you don’t know where it comes from. You may be wondering what to do when you identify a reversing gear noise that continues on your Bmw Serie 3? Any gearbox trouble can be important, but before making sure, it is better to do a few investigations. Our team has created this paper to support you fix it. First, we will see what the sources and the different gearbox noises can be on Bmw Serie 3, and second, what are the solutions available to you.
Classical reverse Bmw Serie 3 noises and some tips to maintain your gearbox
Why does the reversing of my Bmw Serie 3 make a different noise from my other speeds?
De facto, integrating all gears, bearings and pinions into a gearbox is a difficult exercise. The noise created by the reversing of your Bmw Serie 3 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 chosen 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 automobile in the revs, you risk to burn your clutch or gnawing at the gearbox pinions. - Never reverse while the automobile is in motion or vice versa:
Reversing the direction of operation of the gearbox during operation is a very bad idea. In fact, the pressure you will exert on the gears will be significant and you will produce 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 notice a reverse noise on your Bmw Serie 3 if you shift gear under these conditions.
Several Bmw Serie 3 reversing noises and their triggers
Finally in this section, we will move on to what you are probably most excited about in this page, to find out about the source of reversing noise on Bmw Serie 3. Here are the 3 typical sounds you may be victim of.
I find out a grinding noise when starting in reverse gear
If you hear a grinding noise when you start in reverse with your Bmw Serie 3, 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 possible that due to their wear the silentblocks no longer absorb the engine vibrations well. In this situation, do not hesitate to consult this document for more info about strut mount noises on Bmw Serie 3.
An increased reverse knocking noise on Bmw Serie 3X
If you are subject to a knocking noise when you are in reverse with your Bmw Serie 3 and this noise tends to build up as you gain speed. It is possible that you are experiencing a serious trouble that needs to be fixed very fast before ruining your entire gearbox. In fact, 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 very fast. Take your automobile to your mechanic quickly or read this article about gearbox noise on Bmw Serie 3 for more data.
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 Bmw Serie 3 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.
