whining is normally a power steering pump or alternator. A water pump or a/c clutch will normally make a grinding/scraping noise. You can determine if it's a belt driven accessory by removing the serp belt and starting the car. If the noise is still there, you have bigger problems (possible trans/torque converter). If the noise goes away, you know it's a belt driven accessory or idler/tensioner pulley, then it's just a matter of tracking it down.