Shortly after starting my car a few days ago, I could hear a chirping, squeaking noise. I thought it was the alternator belt so I changed it. No change in the noise. I removed the alternator belt completely. The noise was still there. Moving the steering wheel didn't change anything so I figured it's probably not power steering related. I removed the power steering belt (alt and PS belts both drive run the water pump) and the noise went away. The A/C belt still runs the power steering pump so that eliminated the power steering pump. With the alternator and PS belts removed, I grabbed the fan clutch and tried to wiggle it... The water pump has a bit of play in the bearing/shaft. I put the alternator belt back on and the noise is back. Now I can hear a very slight growl along with the chirping noise. I couldn't hear anything different with my stethoscope against the water pump but that might not be unusual if the bearing is just starting to fail. There's been no leaking at the WP weep hole, yet. I guess it's time for a new water pump as this one is about 12 years old with 60K miles on it and the noise is only present when it's turning. I just completely flushed the cooling system and replaced all of the hoses and fan clutch when I rebuilt my A/C system a couple hundred miles ago. Now I've got to pull everything apart and drain the system to replace the water pump.