Question HUMMING SOUND honda CR-V 2002 with 200+++ mileage AT

hack3thack3t philippinesMember Posts: 1
edited June 2017 in Honda
just a quick info.. if cold start there's no sound.. then once you drive it for a couple of minutes the sound starts appearing. It normally appears 700rpm and above but below 700 rpm the sound is gone... This is both in Idle and in moving. And the sound appears everytime you press on the accelerator where it goes up to 700 rpm.

The best part is we already remove the drive belt to see if it's one of the pulleys from the alternator , water pump etc but still the sound still there.

another thing is I have this sound with air intake and with stock intake.

here's the link for the sound

Please help maybe somebody experienced this and can give me an Idea. Thanks!
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