When you find out about abnormal noises on your Mercedes Classe C 3 you tend to stress about them. Especially when you feel a noise when you accelerate on your Mercedes Classe C 3. It is automatically assimilated to an engine problem and can therefore be severe. As we know that you do not take these complications lightly, we have decided to create this content to help you find the causes and get rid of this matter 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 C 3, then what is a whistling or ratling noise at the acceleration of my Mercedes Classe C 3, then the sources of a noise that intensifies during acceleration and finally a noise that stops when I stop accelerating.
Ma Mercedes Classe C 3 makes a high-pitched noise when I accelerate:
If your Mercedes Classe C 3 makes a loud noise when you accelerate, it is quite conceivable that the alternator belt is the reason of your problem. You will need to establish if this noise takes place abruptly and if it can stop as it started. The alternator belt is a wearing part that is used to get power to the secondary components of your Mercedes Classe C 3’s engine and although it is less vital than the timing belt it can cause engine failure if it breaks. This sound may be a warning sign of a slackened belt, in which case the tensioner roller or its wear and tear may be to blame. In any case, check the state of your belt and its tension. If it causes this acceleration noise on Mercedes Classe C 3, go to your technician.
Ma Mercedes Classe C 3 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 accompanies the rattling noise when you accelerate with your Mercedes Classe C 3, it is conceivable that your turbo is screwing up and some of its parts are at the end of their life. Verify it and swap it if it is the reason, otherwise you risk clogging your engine in the long run. If you hear this blowing or whistling sound on your car, feel free to consult this document about turbo noises on Mercedes Classe C 3, if you would like more information.
If, on the other hand, you do not experience any power loss due to an humming noise on your Mercedes Classe C 3, 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 locate the source of this acceleration sound.
Ma Mercedes Classe C 3 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 Mercedes Classe C 3 gets loud, then you will have to think about the rolling parts of your vehicle. In fact, if this loud noise does not occur when you iddle, it is certainly linked to your transmission, and, in general, to your wheels. The most known reason is the state of your bearings, so make sure to check their state to make sure it is not the reason of this loud noise when you accelerate. If not, go to this document about the noises related to Mercedes Classe C 3 noise wheels.
Ma Mercedes Classe C 3 produces a noise when I accelerate that ends when I stop accelerating:
Finally, if you encounter a noise when accelerating with your Mercedes Classe C 3 and this noise which could be a cliking sound tends to end 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 around every 120 000 / 130 000km. To evaluate it, you just have to see if you have more difficulty than every time shifting gears, if you feel a resistance either stronger or non-existent in the clutch pedal. If you have any of these signs of illness, go to your technician to swap the clutch release bearings on your Mercedes Classe C 3. Go through our article on clutch noise on Mercedes Classe C 3 for more information.
