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Old 02-03-2009, 11:03 PM   #1
1st Gear Newbie
Join Date: Dec 2008
Location: Toronto
Posts: 16
Z4 3.0i - Whistling Sound

Hi guys,

I have this whistling noise when 1,000~2,000 rpm.
I hear no whistle when it's idling, but when i gently press on the gas pedal, it makes the whistle and the engine revs right after.
I hear it the most when I'm driving in the parking lot, rpm around 2,000 it makes the sound and when it revs up, it disappears. Only whistles on low rpms.

I've already changed the oil separator, and i don't know what else to do.

Any ideas?
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