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SUPPORT ZPOST BY DOING YOUR TIRERACK SHOPPING FROM THIS BANNER, THANKS! |
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09-25-2010, 12:17 AM | #23 |
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Drives: 2004 Alpine White BMW Z4
Join Date: Jan 2010
Location: Southern California/Montana
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I'll have to check again and see if I covered all the cracks. The whistle happens when I hit the gas pedal to about 15%. The noise will be constant if i hold the pedal there. If i let up or press it in more, the whistle goes away.
It is loud enough to hear in the cabin if you concentrate and it's loud enough for people on the street to hear. It's not a rattle. It's more of a whistling sound from the engine compartment. Did you ever get the name of the part, Cabro? Do you guys think it's a fuel pump thing? What else engages exactly when the throttle is at ~15%? |
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09-25-2010, 09:25 PM | #24 | |
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Haven't had it taken apart to confirm yet but the tech thinks it's the Crankcase vent valve. Apparently they start to deteriorate after a while and once a crack appears it will start to whistle exactly as you describe. I have the exact same whistle under the exact same circumstances (15% throttle).
He said it was approx. $600 job but he wants me to wait till the car throws a code as he doesn't want to take it apart in of off chance that's not the problem and i'm out part of the $600. Quote:
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04-16-2012, 12:38 PM | #25 |
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I have the same whistle occurring at steady moderate RPM. It seems to be coming from the driver's side rear to mid section. It's at the decibel level and pitch that you can't cover with music. It's really annoying!!! I'll check out the air intake areas like others hve done, but that seems to far forward.
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04-16-2012, 07:38 PM | #26 | |
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Guys - no cost test: wrap the noted 'corrugated' rubber pipe with electrical tape The whistle noise stops - youll know that was it Change it yourself and save the $600 |
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