High frequency beeping sound from E46 330i. - BMW Forum - BimmerWerkz.com
3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

 
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#1 (permalink) Old 01-20-2010, 02:20 PM
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High frequency beeping sound from E46 330i.

Hi guys.

You got to help me, its driving me crazy.

I have a high frequency sound when im driving at cruise speed. Its only appears when im driving at about 20% throttle, and disappears at greater throttle. Its not there when the engine is at idle.

I had the crankcase vent valve replaced, but sadly the noise is still there, and driving me crazy!!

I have a E46 330i touring, 12/2004.
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