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 ? :dunno:

https://www.youtube.com/watch?v=u1Gi...ature=youtu.be

Bearing(s) in belt tensioner and/or deflection pulley and/or alternator.

Sounds like it coming from under the intake box? How can I be sure it's one of the ones you mentioned?

Use a stethoscope, or just replace as they're /relatively/ cheap.

Take a can of spray lubricant and shoot the idler pulley. If the noise goes away, you have your answer.