Hi all, back with another mechanical question. There's this odd noise coming from the engine that I can only hear from the inside with the doors and windows closed. It sounds like a roller or bearing going bad on the serpentine belt, or even worse, the timing belt. However, if I go outside, I can't hear it at all. I used a stethoscope and put it on the metal surrounding the serpentine belt, and also on the timing cover/near the timing belt area to see if I could hear the noise, but I couldn't hear anything strange compared to what I hear inside. I've uploaded a short video, you can definitely hear the noise, it's a deeper noise in the background from the engine noise. I do have the car scheduled for a timing/serpentine belt and water pump job next week, so if it is related to that it should obviously get fixed when everything gets replaced. Just curious if anyone has heard a similar noise before