Hissing/ Frequency sound from engine bay. Vacuum leak?
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Hissing/ Frequency sound from engine bay. Vacuum leak?
About a week ago i discovered this noise coming from the engine bay. It can be heard even inside the cabin while driving. Car has still been running fine and no codes however i am trying to get to the bottom of what is causing the noise. Could it possibly be a vacuum leak? If anyone has any suggestions or solutions it would be greatly appreciated thank you.
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