Quote:
Originally Posted by E91 M Sport
Might be the clutch/bearings on the AC compressor? To isolate the drive accessories try this... remove the serpentine belt and fire up the car. If the noise is still present it's internal (engine). You should know immediately so don't run the engine for to long without the belt. You'll probably get some charging warnings etc FYI.
With the belt off spin each component and listen/feel for any abnormalities. A slight click or squeak @ 7-800 RPM will produce some gnarly sounds.
Hopefully this helps.
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I will give it a shot. Thank you!