I SHUT OFF MY SRT-6 AND when walking away i could hear a loud spinning noise from under hood so i opened the hood and the AUXILIARY AIR PUMP part # 0-580-000-021 816 was spinning with the key in off and i could smell like a wire burning so i pulled the 2 wire prong from the unit and lit it cool plunged it back in to see what was happening and nothing it seems OK i start the car drive to work and it seems OK ......i really don't know what this unit does except its for smog from what i read so far....can my car run without this unit or will it cause Moore problems....has anyone Else had this problem?? it seem fine but maybe i should replace it ....if so wheres a good place to buy it from ??....( THANK YOU FOR ANY INPUT!!)