Thanks so much, Joe, for the kind reply!
I have to say this is a big mystery, still unsolved.
About a week ago, when this sound started, it sounded like it was the brake pads' sensor (it actually didn't change pitch when I applied the brakes, but only with slowing down - even without the breaks - and accelerating). So, I took the car to my mechanic, and he replaced the brake pads with new ones. I thought that was it, and everything was fine driving home. But the next day, the sound all of a sudden appears again!
So, on the weekend I put the car up on the jack and rotated the front left wheel by hand. It indeed made the sound of metal scratching metal (i.E. The sensor again?). So, the next day I drove back to the mechanic, and I heard this annoying sound all the way over there (not a short drive). But then when I get to the mechanic - just as with Murphy's law - he gets into the car and drives it around (with me) to listen to the sound and it's gone! Absolutely gone. He lifts the car up, inspects the wheels, and doesn't see, nor hear anything wrong! (I'm assuming he would see, or hear, if the dust shield was the culprit?). He said it might have been a stone or something that was possibly stuck between the rotor and that piece of metal next to it, but I don't know.
This is mind boggling. This Saturn (LW200, 2001) is just - something! I'm afraid to drive the car now, as I'm sure this sound will be back! Do you have a picture of the dust shield by any chance, so that I could take a look at it myself?
Thank you again!
AJ
Wednesday, February 16th, 2022 AT 9:52 PM