I recently noticed a whistling noise coming from my Audi A4 when I accelerate. It seems to be coming from the engine area. Can anyone explain what could be causing this?
ReplyIt's likely due to a vacuum leak in your engine. Check your hoses and connections for any cracks or leaks. Also, try cleaning your MAF sensor and see if that helps.
I had the same issue with my A4 and it turned out to be a faulty diverter valve. Get that checked out and replaced if necessary.
Another possible cause could be a worn serpentine belt or tensioner. Have your mechanic check those components and replace if necessary.
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