When you find out about abnormal sounds on your Mercedes Classe E 4 you tend to stress about them. Specifically when you feel a noise when you accelerate on your Mercedes Classe E 4. It is instantly assimilated to an engine unit problem and can therefore be severe. As we know that you do not take these trouble lightly, we have decided to publish this content to support you find the causes and eliminate this concern as quickly as possible. To do this, we will first see what are the causes of a high pitched noise when accelerating with my Mercedes Classe E 4, then what is a whistling or ratling noise at the acceleration of my Mercedes Classe E 4, then the origins of a noise that intensifies during acceleration and finally a noise that ends when I stop accelerating.
Ma Mercedes Classe E 4 makes a high-pitched noise when I accelerate:
If your Mercedes Classe E 4 produces a loud noise when you accelerate, it is quite conceivable that the alternator belt is the cause of your problem. You will need to identify if this noise happens suddenly and if it can stop as it started. The alternator belt is a wearing part that is used to bring power to the secondary components of your Mercedes Classe E 4’s engine and although it is less crucial than the timing belt it can cause engine damage if it stops working. This sound may be a sign of a slackened belt, in which case the tensioner roller or its wear and tear may be at fault. In any case, check the state of your belt and its tension. If it causes this acceleration noise on Mercedes Classe E 4, go to your mechanic.
Ma Mercedes Classe E 4 makes whining noise when I accelerate:
- Rattling or whistling noise created by the turbo
- Humming noise caused by air leakage
If you have a power loss that occurs with the rattling noise when you accelerate with your Mercedes Classe E 4, it is possible that your turbo is screwing up and some of its parts are at the end of their life. Check it and change it if it is the cause, otherwise you risk blockage your engine in the long run. If you hear this blowing or whistling sound on your car, feel free to refer to this article about turbo noises on Mercedes Classe E 4, if you would like more info.
If, on the other hand, you do not get any power loss due to an humming noise on your Mercedes Classe E 4, it is more than likely that you have one of your junctions or air hoses that has holes. So check the whole air supply system from your air filter to your engine to determine the source of this acceleration sound.
Ma Mercedes Classe E 4 produces 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 Mercedes Classe E 4 gets loud, then you will have to check the rolling parts of your car. In fact, if this loud noise does not emerge when you iddle, it is certainly connected to your transmission, and, in general, to your wheels. The most regular reason is the state of your bearings, so make sure to check their condition to ensure that it is not the reason of this loud noise when you accelerate. If not, go to this article about the noises related to Mercedes Classe E 4 noise wheels.
Ma Mercedes Classe E 4 makes a noise when I accelerate that ceases when I stop accelerating:
Finally, if you encounter a noise when accelerating with your Mercedes Classe E 4 and this noise which could be a cliking sound tends to reduce 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 almost 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 change the clutch release bearings on your Mercedes Classe E 4. Read our article on clutch noise on Mercedes Classe E 4 for more information.
