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Yeah, I responded to your earlier thread on this. Get an inexpensive mechanic's stethoscope. Or if you have short hair, a screwdriver will do. Touch the alternator while it's running and lay your ear on the handle. I bet you'll hear that whine coming from it.
The other thing you can do to test is disconnect the accessory belt. Don't have to completely remove it so it takes only a couple minutes. Just make sure it's not hanging near the crankshaft. Start the engine and quickly listen for the sound. Do not run it any longer than, I dunno, 15-30 seconds because the water pump is not running.
If you still hear the sound, which I seriously doubt, you'll be in for a real treat because, unless you failed to tell us about having a blower, the only other thing that could potentially make that sound is the oil pump.
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