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Hi all, I've just returned from a trip and have noticed now that when the engine is cold and the motor under load (between 1700 and 2500 prm) I get a loud screeching noise coming from the passenger side of the engine bay. Once it warms up the sound goes away. I've been doing some reading on threads here and people mention fan belt, idler, EGR value and warped manifold for this kind of noise. Any thoughts??? My vehicle is a 2008 3.0 CRD Auto.