Hi-pitched whine in '94 TBird 4.6

'94 TBird 4.6, 68k easy mi.
When I start it in the morning, I hear a very hi-pitched whine/squeal from area of motor while car is parked. Gone when motor is fully warm. Been going
on for quite some time.
Plenty of power steering fluid. No evidence of PS problem.
I've replaced the belt-tensioner and idler pulleys. With new bearings in the pulleys, I guess it's more-or-less gotta be the alternator? This conclusion is not necessarily consistent with the mileage?
I put a long ratchet extension on alt. housing, open end in my po' ear: I do hear a grinding-like sound, but ...
With the belt off, the alt. pulley spins freely. No up/down or side-to-side play to speak of. Same for forward/backward play. I can hear a little growl-like sound when I spin the pulley if I put my ear close to the alt.
Don't see any evidence of a water pump problem. Stick my finger down under the WP pulley by the weep-hole, it comes back dry.
Any way to confirm it's alt. bearings?
If it is, how to proceed? Practical to rebuild it my-own-self with only moderate skills/tools?
Note: I fished a fix for my long-term broken-odometer problem outa TCCOA (ThunderChicken/Cougar Club of America), was surprised it was still so active, joined, thought I'd post this there. As soon as I was "approved" I got the welcome message:
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About as friendly as encountering a crazed pit viper, frothing nitric acid from mouth, and with a Model 1911 .45 ACP in one hand, a straight- razor in the other (if pit vipers had hands). :-) TIA, Puddin'
" ... and the bees made honey in the lion's head." - from "If I Had My Way", Blind Willie Johnson
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the altermator in my 99 crown vicky has been making the same noise when cold since it was new. i just turn the radidio up till it warms up and the noise goes away.

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So my beloved Fordo is *supposed* to sing a flogging Aria (like the fat lady in the opera) right out the box (or showroom)???
Jeez, P

" ... and the bees made honey in the lion's head." - from "If I Had My Way", Blind Willie Johnson
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snipped-for-privacy@gmail.com says... | |'94 TBird 4.6, 68k easy mi. | |When I start it in the morning, I hear a very hi-pitched whine/squeal from |area of motor while car is parked. Gone when motor is fully warm. Been going |on for quite some time. | |
Does the noise change when you turn the A/C on (compressor clutch engaged)? No critters sleeping under the hood overnight ?
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No change. Damned AC *may* be short-cycling, 'tho.

I hadda run Bigfoot and a few pygmies outa there the other day. They promised they'd be quiet next time.
P
" ... and the bees made honey in the lion's head." - from "If I Had My Way", Blind Willie Johnson
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