When you come across unusual noises on your Mercedes A class you tend to concerns about them. Especially when you feel a noise when you accelerate on your Mercedes A class. It is automatically assimilated to an engine unit trouble and can therefore be severe. As we know that you do not take these complications lightly, we have chosen to write this content to support you find the causes and eradicate this matter as quickly as possible. To do this, we will first see what are the oeigins of a high pitched noise when accelerating with my Mercedes A class, then what is a whistling or ratling noise at the acceleration of my Mercedes A class, then the sources of a noise that intensifies during acceleration and to finish a noise that stops when I stop accelerating.
Ma Mercedes A class makes a high-pitched noise when I accelerate:
If your Mercedes A class generates a loud noise when you accelerate, it is quite conceivable that the alternator belt is the reason of your trouble. You will need to establish if this noise happens suddenly and if it can stop as it started. The alternator belt is a wearing part that is utilized to carry power to the secondary components of your Mercedes A class’s engine and although it is less crucial than the timing belt it can cause engine troubles 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, check the condition of your belt and its tension. If it causes this acceleration noise on Mercedes A class, go to your technician.
Ma Mercedes A class 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 A class, it is plausible that your turbo is screwing up and some of its elements are at the end of their life. Verify it and change it if it is the reason, otherwise you risk blockage your engine in the long run. If you listen to this blowing or whistling noise on your car, feel free to consult this article about turbo noises on Mercedes A class, if you would like more information.
If, on the other hand, you do not get any power loss due to an humming noise on your Mercedes A class, it is more than likely that you have one of your junctions or air hoses that has holes. So check the complete air supply system from your air filter to your engine to discover the starting point of this acceleration sound.
Ma Mercedes A class 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 A class gets loud, then you will have to check out the rolling parts of your vehicle. Indeed, if this loud noise does not emerge when you iddle, it is certainly in connection with your transmission, and, in general, to your wheels. The most basic cause is the state of your bearings, so make sure to check their condition to be sure it is not the cause of this loud noise when you accelerate. If not, go to this document about the noises related to Mercedes A class noise wheels.
Ma Mercedes A class makes a noise when I accelerate that ceases when I stop accelerating:
At last, if you experience a noise when accelerating with your Mercedes A class 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 cause. Indeed, the clutch release bearings must be changed approximately every 120 000 / 130 000km. To test 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 A class. Read our article on clutch noise on Mercedes A class for more information.
