Can't quite be sure, but............
When engine is cold loosen fan belt and remove it from crank, so accessories don't spin, start engine, see if it makes the noise.
You can run a cold engine 2 or 3 minutes without water pump, but no longer, let it cool down if you need to repeat test.
Battery light will stay on......no alternator turning
If no noise, test each pulley by spinning, especially idler pulley and tensioner pulley, they are common noise makers
If it still makes the noise it might be easier to track down without the fan noise, common issue on 3.0l is the CAM synchronizer, it is in the distributor hole at the back of the engine, Cam position sensor sits on top of it, the bushings wear out and cause a squealing noise, doesn't sound like that to me in the video but............
They last about 80-100k miles
Last edited by RonD; 08-08-2015 at 07:24 PM.