When you find out about irregular sounds on your Mercedes Cla you tend to worry about them. Especially when you feel a noise when you accelerate on your Mercedes Cla. It is instantly assimilated to an engine trouble and can therefore be critical. As we know that you do not take these trouble lightly, we have chosen to create this content to support you find the causes and eradicate this issues 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 Cla, then what is a whistling or ratling noise at the acceleration of my Mercedes Cla, then the origins of a noise that intensifies during acceleration and at last a noise that ends when I stop accelerating.
Ma Mercedes Cla makes a high-pitched noise when I accelerate:
If your Mercedes Cla 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 occurs abruptly and if it can stop as it started. The alternator belt is a wearing part that is employed to carry power to the secondary components of your Mercedes Cla’s engine and although it is less vital than the timing belt it can bring about engine damage if it stops working. This noise 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, verify the condition of your belt and its tension. If it causes this acceleration noise on Mercedes Cla, go to your mechanic.
Ma Mercedes Cla makes whining noise when I accelerate:
- Rattling or whistling noise generated 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 Cla, it is plausible that your turbo is screwing up and some of its parts are at the end of their life. Examine it and swap it if it is the reason, otherwise you risk blockage your engine in the long run. If you notice this blowing or whistling noise on your car, feel free to refer to this article about turbo noises on Mercedes Cla, if you would like more details.
If, on the other hand, you do not experience any power loss due to an humming noise on your Mercedes Cla, 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 starting point of this acceleration sound.
Ma Mercedes Cla 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 Cla gets loud, then you will have to check the rolling parts of your car. Indeed, 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 cause is the state of your bearings, so remember to verify their state to ensure that it is not the cause of this loud noise when you accelerate. If not, go to this content page about the noises related to Mercedes Cla noise wheels.
Ma Mercedes Cla produces a noise when I accelerate that ends when I stop accelerating:
At last, if you encounter a noise when accelerating with your Mercedes Cla 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 cause. Indeed, the clutch release bearings must be replaced around every 120 000 / 130 000km. To test 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 symptoms, go to your auto mechanic to change the clutch release bearings on your Mercedes Cla. Read our article on clutch noise on Mercedes Cla for more information.
