I am sorry. I heard that and meant to mention it. That is the sound or a bearing that is failing.
First thing I would do to confirm it is removing the belt and run the engine for a minute and make sure that grinding/rattling noise is gone.
Then put the belt back on and use a long screwdriver touch it to each pulley (in a safe spot that it won't get caught in the pulley) and then touch your ear to the handle of the screwdriver.
The place that this noise sounds the loudest is the pulley that is failing.
Here is a guide that talks about this type of noise:
https://www.2carpros.com/articles/vehicle-scraping-noise
You can also get a mechanics stethoscope from most any parts store to listen to this as well and that would be more accurate but not required. I posted a picture below of this.
Let us know what you find with this and if you have other questions on it.
If you remove the belt and the noise is still there then that noise is inside the timing cover at which point, I would go in and change the belt if you have not done it yet and inspect everything while you are there.
Image (Click to make bigger)
Saturday, October 9th, 2021 AT 6:05 AM