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Old 04-29-2016, 08:14 PM
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Noise from engine when over 1k RPM

Hi, wondering if anybody knows why my engine is making this noise. 08' 3.0si. No other problems besides the annoying noise. Pitch of the noise also does not change. Stays the same even at higher RPM. Anybody ?

https://www.youtube.com/watch?v=u1Gi...ature=youtu.be
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  #2  
Old 04-30-2016, 05:12 PM
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Bearing(s) in belt tensioner and/or deflection pulley and/or alternator.
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Old 04-30-2016, 05:19 PM
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Sounds like it coming from under the intake box? How can I be sure it's one of the ones you mentioned?
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2011 BMW X5 35d Deep Sea Blue Metallic w/ 3rd row
Custom Kicker Audio System
Style 259's on Dunlop Sport Maxx Run Flat
Tune and Exhaust Coming Soon....

05' Ram SLT 2500 5.9l Cummins





(Gone But Not Forgotten) 2008 BMW X5 3.0si Alpine White III

(Sold) 2002 BMW X5 3.0 TitanSilber Metallic
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  #4  
Old 04-30-2016, 09:16 PM
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Use a stethoscope, or just replace as they're /relatively/ cheap.
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Old 05-05-2016, 08:33 AM
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Take a can of spray lubricant and shoot the idler pulley. If the noise goes away, you have your answer.
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