So i noticed on my dads car (05 comp g) that there was sounded like a knock coming from the motor. I was like here we go again. But it sounded like it was coming from the blower so i pulled the sc belt and the the noice went away. the coupler has zero play in it and none of the pulleys seem bad all spinning freely with no catching or noice. It is too my understanding that snout bearings tend to grind more than knock as they go out and last week there was no noise at all. so any ideas? car has 90K on it by the way.