Mystery Engine noise

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Uploaded by on Aug 5, 2007

Intermittent noise from my '01 330i
UPDATE: After buying a stethoscope to narrow down the offending pulley, the noise went away. It hasn't returned for over a year...

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Autos & Vehicles

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Uploader Comments (Tangent360)

  • dude change ur damm pulley

    and timing belt

  • Umm, '01 330is don't have timing belts...

    The noise also hasn't come back for months.

  • idler pulley?

  • That's my guess, but buying an automotive stethoscope appears to be the cure for the noise. It hasn't made the noise since I bought the tool needed to pinpoint its source...

Top Comments

  • MMMM I think the crickets are hungry !!! haha

  • Is there like gas in the car?

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All Comments (28)

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  • @thorfoxxx ... I have a 735i bmw.... It has the same really loud high pitched fluttery whistle sound... What is it?

  • I changed my alternator because of bad voltage controller and this kind of noise disappeared in my case... It turned out also the bearings of the alternator where bad, causing probably the noise...

  • my car makes a noise like that its like a chirp and i have no idea what it is it is so annoying.. and ive replaced the idler pulley...

  • watch?v=NzlG28B-R8Y

    :-))

  • i love this engine!dual vanos.. ahhh...

  • @Tangent360 has one. dumb ass

  • @Tangent360 hahahaha it happens sometimes!!!! lol the engines need fear!!!!

  • @Tangent360 mine made same noise it was idler pulley if it ever comes back try changing that

  • Alternator? flood it with oil... this is what i did with my Rover Mini and it worked fine.

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