High frequency beeping sound from E46 330i. - BMW Forum - BimmerWerkz.com

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post #1 of 1 (permalink) Old 01-20-2010, 02:20 PM Thread Starter
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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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