When you detect unusual sounds on your Mercedes Viano you tend to worry about them. Especially when you feel a noise when you accelerate on your Mercedes Viano. It is immediately assimilated to an engine problem and can therefore be critical. As we know that you do not take these complications lightly, we have made a decision to write this content page 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 Viano, then what is a whistling or ratling noise at the acceleration of my Mercedes Viano, then the sources of a noise that intensifies during acceleration and to finish a noise that stops when I stop accelerating.
Ma Mercedes Viano makes a high-pitched noise when I accelerate:
If your Mercedes Viano produces a loud noise when you accelerate, it is quite plausible that the alternator belt is the reason of your problem. You will need to determine if this noise shows up suddenly and if it can stop as it started. The alternator belt is a wearing part that is employed to get power to the secondary components of your Mercedes Viano’s engine and although it is less crucial than the timing belt it can cause engine failure if it breaks. 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 Viano, go to your technician.
Ma Mercedes Viano 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 Viano, it is conceivable that your turbo is screwing up and some of its elements 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 listen to this blowing or whistling sound on your car, feel free to consult this document about turbo noises on Mercedes Viano, if you would like more info.
If, on the other hand, you do not experience any power loss due to an humming noise on your Mercedes Viano, it is more than likely that you have one of your junctions or air hoses that has holes. So check the entire air supply system from your air filter to your engine to discover the origin of this acceleration sound.
Ma Mercedes Viano 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 Viano gets loud, then you will have to look at the rolling parts of your vehicle. Indeed, if this loud noise does not show up when you iddle, it is certainly connected to your transmission, and, in general, to your wheels. The most basic reason is the state of your bearings, so remember to check their condition 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 Viano noise wheels.
Ma Mercedes Viano creates a noise when I accelerate that ceases when I stop accelerating:
Finally, if you encounter a noise when accelerating with your Mercedes Viano 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 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 auto mechanic to swap the clutch release bearings on your Mercedes Viano. Go through our article on clutch noise on Mercedes Viano for more information.
