Thread: Moaning Noise coming from N54 Engine (On and off...) What could it be??
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      02-05-2020, 10:47 PM   #31
Cabdriver
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Quote:
Originally Posted by whosdady View Post
The noise is coming from the boost solenoids. I would replace both. They aren't too expensive and are easy to do.
I second that, boost solenoids.
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