When you identify abnormal sounds on your Mercedes Classe A 4 you tend to concerns about them. Specifically when you feel a noise when you accelerate on your Mercedes Classe A 4. It is immediately assimilated to an engine unit trouble and can therefore be considerable. As we know that you do not take these trouble lightly, we have chosen to prepare 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 A 4, then what is a whistling or ratling noise at the acceleration of my Mercedes Classe A 4, then the origins of a noise that intensifies during acceleration and to finish a noise that ceases when I stop accelerating.
Ma Mercedes Classe A 4 makes a high-pitched noise when I accelerate:
If your Mercedes Classe A 4 generates a loud noise when you accelerate, it is quite plausible that the alternator belt is the induce of your trouble. You will need to identify if this noise occurs abruptly and if it can stop as it started. The alternator belt is a wearing part that is employed to supply power to the secondary components of your Mercedes Classe A 4’s engine and although it is less crucial than the timing belt it can cause engine problem if it breaks. This sound may be a symptom of a slackened belt, in which case the tensioner roller or its wear and tear may be responsible. In any case, verify the condition of your belt and its tension. If it causes this acceleration noise on Mercedes Classe A 4, go to your mechanic.
Ma Mercedes Classe A 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 comes with the rattling noise when you accelerate with your Mercedes Classe A 4, it is conceivable that your turbo is declining and some of its parts are at the end of their life. Verify it and change it if it is the induce, otherwise you risk blockage your engine in the long run. If you hear this blowing or whistling sound on your car, feel free to consult this content page about turbo noises on Mercedes Classe A 4, if you would like more information.
If, on the other hand, you do not feel any power loss due to an humming noise on your Mercedes Classe A 4, it is more than likely that you have one of your junctions or air hoses that has holes. So verify the whole air supply system from your air filter to your engine to discover the source of this acceleration sound.
Ma Mercedes Classe A 4 generates 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 A 4 gets loud, then you will have to look at the rolling parts of your car. Indeed, if this loud noise does not show up when you iddle, it is certainly in connection with your transmission, and, in general, to your wheels. The most known reason is the state of your bearings, so make sure you verify their state to be sure it is not the reason of this loud noise when you accelerate. If not, go to this content page about the noises related to Mercedes Classe A 4 noise wheels.
Ma Mercedes Classe A 4 makes a noise when I accelerate that stops when I stop accelerating:
At last, if you experience a noise when accelerating with your Mercedes Classe A 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. Indeed, the clutch release bearings must be swapped 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 signs of illness, go to your auto mechanic to swap the clutch release bearings on your Mercedes Classe A 4. Look at our article on clutch noise on Mercedes Classe A 4 for more information.
