When you find out about abnormal sounds on your Bmw Serie 3 E90 you tend to worry about them. Especially when you feel a noise when you accelerate on your Bmw Serie 3 E90. It is immediately assimilated to an engine motor problem and can therefore be considerable. As we know that you do not take these problems lightly, we have chosen to produce this content page to support you find the causes and eliminate this concern as quickly as possible. To do this, we will first see what are the reasons of a high pitched noise when accelerating with my Bmw Serie 3 E90, then what is a whistling or ratling noise at the acceleration of my Bmw Serie 3 E90, then the sources of a noise that intensifies during acceleration and finally a noise that ends when I stop accelerating.
Ma Bmw Serie 3 E90 makes a high-pitched noise when I accelerate:
If your Bmw Serie 3 E90 makes a loud noise when you accelerate, it is quite possible that the alternator belt is the reason of your problem. You will need to determine if this noise happens suddenly and if it can stop as it started. The alternator belt is a wearing part that is employed to get power to the secondary components of your Bmw Serie 3 E90’s engine and although it is less vital than the timing belt it can bring about engine problem if it stops working. This noise may be a symptom of a slackened belt, in which case the tensioner roller or its wear and tear may be at fault. In any case, verify the state of your belt and its tension. If it causes this acceleration noise on Bmw Serie 3 E90, go to your auto mechanic.
Ma Bmw Serie 3 E90 makes whining noise when I accelerate:
- Rattling or whistling noise caused by the turbo
- Humming noise caused by air leakage
If you have a power loss that accompanies the rattling noise when you accelerate with your Bmw Serie 3 E90, it is conceivable that your turbo is declining and some of its parts are at the end of their life. Check it and swap it if it is the reason, otherwise you risk blockage your engine in the long run. If you hear this blowing or whistling noise on your car, feel free to refer to this document about turbo noises on Bmw Serie 3 E90, if you would like more details.
If, on the other hand, you do not get any power loss due to an humming noise on your Bmw Serie 3 E90, it is more than likely that you have one of your junctions or air hoses that has holes. So verify the entire air supply system from your air filter to your engine to locate the origin of this acceleration sound.
Ma Bmw Serie 3 E90 makes an increasingly loud noise when I accelerate:
If, on the other hand, you have the feeling that the more you gain speed, the more your noise at acceleration on Bmw Serie 3 E90 gets loud, then you will have to check the rolling parts of your vehicle. In fact, if this loud noise does not show up when you iddle, it is certainly related to your transmission, and, in general, to your wheels. The most common reason is the state of your bearings, so remember to verify their condition to be sure it is not the reason of this loud noise when you accelerate. If not, go to this article about the noises related to Bmw Serie 3 E90 noise wheels.
Ma Bmw Serie 3 E90 makes a noise when I accelerate that ends when I stop accelerating:
To finish, if you encounter a noise when accelerating with your Bmw Serie 3 E90 and this noise which could be a cliking sound tends to stop when you disengage (press the clutch pedal), then one of the wear parts of your clutch system may be the reason. In fact, the clutch release bearings must be changed approximately every 120 000 / 130 000km. To check it, you just have to see if you have more difficulty than usually shifting gears, if you feel a resistance either stronger or non-existent in the clutch pedal. If you have any of these symptoms, go to your auto technician to replace the clutch release bearings on your Bmw Serie 3 E90. Go through our article on clutch noise on Bmw Serie 3 E90 for more information.
