Hi,
Does the engine seem to still be running properly? Has the check engine light turned on while the engine is running? Is the sound louder with the hood opened? Is there anything that changes the speed of the noise or intensity? For example, if you rev the engine, does the sound change?
If possible, record the sound and upload it for me to hear. That may be helpful. Also, check the serpentine belt to make sure it isn't coming apart and a frayed portion is hitting something.
Let me know.
Joe
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Thursday, February 9th, 2023 AT 4:21 PM