I have noticed a rattling noise coming from the engine bay about a week ago, the noise goes away when I push the clutch in. Also about a week ago the car started making a noise that sounds like I have a supercharger as the rpm increases when I drive. The car drives fine and there is no check engine light, but I am curious what might be causing these noises.

One more question, is there a way to reset the ecu by using driver side door sensor or something? I have a blinking air bag light that bugs the hell out of me.