It is never enjoyable to take notice of a sound that you don’t know where it comes from. So, what if you detect a gearbox noise that lasts on your BMW 3 Series? It is most likely to be a minimal matter, but before making sure of that, it is best to conduct a few verifications. Our staff has written this article to support you to correct it. First, we will see what the sources and different gearbox noises can be on BMW 3 Series, and second, what are the solutions available to you.
The several noises and their sources
A gearbox / your transmission is the necessary part of the transmission, it is linked to the clutch that will release the engine tension on the gearbox systems. Experiencing noises from your BMW 3 Series’s gearbox is never a good signal, its fix is practically unimaginable to perform due to the lack of professional mecanician and its replacing requires a heavy expense. The gain is that generally its life expectancy after a first noise is quite long, which gives you time to plan the fix, but it is fundamental to examine instantly what is your exact matter.
Your BMW 3 Series transmission generates noise in neutral
If you feel a gearbox noise even when you are in neutral, it shows that the gearbox’s internal elements are already well worn and that you will have to replace it fairly quickly. Indeed, if you are not even with a gear on and it produces sound, the pinions must already be at the end of their life.
You acknowledge a squeaking, a humming noise at the time of the gear shift
If you are unluckily experiencing squeaks, or humming noises when you switch the gears of your BMW 3 Series, it is unfortunately a good bet that it is your gears that are starting to fatigued. If this sound is not restricted to passing the first gear and keep going when you drive and shift other gears. This is most likely a sign of a gearbox which is nearly good to be replace. If you have the feeling after examining that the noise comes from the clutch and not the gearbox, we suggest you to consult this article in order to find the causes and solutions to a clutch noise on BMW 3 Series.
You feel a whinning or hummin sound from the gearbox of your BMW 3 Series
Finally, if you acknowledge a noise close to a humming or whinning sound on the transmssion of your BMW 3 Series, it is very often the case that the gearbox of your BMW 3 Series lacks oil. Indeed, if it lacks oil, the components will be exposed and grind agaisnt each other. In addition, each of its contacts will develop chips or metal dust that will mix with the oil and generate even greater resistance to mechanisms that are already worn out, a snowball effect will appear if you do not promptly change the oil. In this case the oil should be black and your can can smell burning. On occasion this kind of noises will be linked to a release bearing on BMW 3 Series, don’t hesitate to check out our article.
The solutions available if you have a gearbox noise on your BMW 3 Series
- Check the gearbox oil of your BMW 3 Series via the level gauge and reflect on replacing it if the oil is black
- Use the double clutch to try to make it last till you’re able to replace the gearbox, this will limit the already advanced wear of your gearbox and limit the wear of the pinions.
- Start looking for a second-hand or new gearbox, very few mechanics have the ability to change damaged parts in your own system, they will almost always offer you a standard exchange.