01-17-2024, 07:53 PM | #1 |
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2017 x5 50i xdrive with just under 70k miles
Only happens when the car is cold started. Takes a few minutes then the noise starts. After the car warms up it stops. Google drive link - no it isn’t a virus or pron. https://drive.google.com/file/d/1M3W...w?usp=drivesdk |
01-19-2024, 04:03 PM | #9 | |
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Does the noise immediately return when you close the oil fill cap? I would try taking the oil cap on/off until my ear could triangulate a smaller area for the source of the noise. |
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Mhutchman0.00 |
01-19-2024, 04:05 PM | #10 |
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It immediate goes away when open and comes back as soon as closed. The sound is coming from right behind the kidney grilles. Can’t tell more specifics than that.
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01-19-2024, 09:27 PM | #11 |
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So…this may not be it, and it may sound stupid, but…
When you remove the oil fill cap the noise goes away. I’m thinking that allows crankcase pressure to escape. You say if you put the cap back on the noise starts up again. And you hear the noise from just behind the grill. The PCV flows into the intake tubes, just behind the air box. And the air box has an intake just behind the front grill. I’m wondering if the sound is somehow coming from the PCV and emanating from the air box behind the grill? |
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Mhutchman0.00 |
01-19-2024, 09:31 PM | #12 |
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That’s something to check out. I can try and get the air box open when I hear it next and see if the noise is up in there.
Changing out the pcv’s on it doesn’t look too hard. |
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01-20-2024, 09:56 AM | #13 | |
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If you do need to replace the intake tube they’re each around $70 at FCP Euro |
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Mhutchman0.00 |
01-20-2024, 09:59 AM | #14 |
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Thanks for the heads up. Very very much appreciated. If I replace the pcv tubes it’ll be after the weather warms up. Pretty cold here in pittsburgh for another couple months.
I’m the mean time, I’ll try and get a better listen with the air box open. |
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