When you come across unusual noises on your Volvo S90 you tend to worry about them. Specifically when you feel a noise when you accelerate on your Volvo S90. It is automatically assimilated to an engine problem and can therefore be significant. As we know that you do not take these trouble lightly, we have decided to publish this article to help you find the causes and wipe out 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 Volvo S90, then what is a whistling or ratling noise at the acceleration of my Volvo S90, then the origins of a noise that intensifies during acceleration and at last a noise that ceases when I stop accelerating.noise-when-acceleratingvolvo-s90

Ma Volvo S90 makes a high-pitched noise when I accelerate:

If your Volvo S90 generates a loud noise when you accelerate, it is quite conceivable that the alternator belt is the cause of your problem. You will need to determine if this noise occurs suddenly and if it can stop as it started. The alternator belt is a wearing part that is used to bring power to the secondary components of your Volvo S90’s engine and although it is less important than the timing belt it can bring about engine damage if it stops working. This sound may be a symptom of a slackened belt, in which case the tensioner roller or its wear and tear may be to blame. In any case, verify the state of your belt and its tension. If it causes this acceleration noise on Volvo S90, go to your auto technician.

Ma Volvo S90 makes whining noise when I accelerate:

  • Rattling or whistling noise generated by the turbo
  • If you have a power loss that occurs with the rattling noise when you accelerate with your Volvo S90, it is possible that your turbo is failing and some of its elements are at the end of their life. Verify it and swap it if it is the cause, otherwise you risk clogging your engine in the long run. If you find out this blowing or whistling sound on your car, feel free to consult this content about turbo noises on Volvo S90, if you would like more details.

  • Humming noise caused by air leakage
  • If, on the other hand, you do not feel any power loss due to an humming noise on your Volvo S90, 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 determine the origin of this acceleration sound.

Ma Volvo S90 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 Volvo S90 gets loud, then you will have to think about the rolling parts of your automobile. In fact, 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 known cause is the state of your bearings, so make sure you verify their state to make sure it is not the cause of this loud noise when you accelerate. If not, go to this document about the noises related to Volvo S90 noise wheels.

Ma Volvo S90 produces a noise when I accelerate that stops when I stop accelerating:

To finish, if you encounter a noise when accelerating with your Volvo S90 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. In fact, 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 manifestations, go to your auto mechanic to swap the clutch release bearings on your Volvo S90. Go through our article on clutch noise on Volvo S90 for more information.