Pulled all belts but the water pump/power steering, noise still present. I'm going to grab a huge fan to push some air then remove the last two belts and see if it's possibly the inner bearing of the water pump.
I grabbed a heater hose about 2 feet long and the only place I can really still hear that high pitched squeal is at the back side of the water pump. Penetrating oil at the front bearing/seal area did nothing...

 

How about using the aux fan? You could probably run long enough to diagnose. From what you have done so far it sounds like the water pump. They usually fail by leaking but could be a bearing.

Good luck. Let us know what you discover.

 

Don't bother with the fans as it won't help without water circulating.
However, if you start with a cold engine you won't have a problem running for long enough to see if it still whistles.

 

Nice point. Forgot that one. Been a long day.
Thanks Alan.

 

It's the F'ing heat, dammit. :thumbsup:

 

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62F here today!! We might make 65 by the end of the week!

 

Sure. Twist the knife....

 

I was on the way back from Lebanon at about 12:30 PM. Car was registering 103F outside.

 

An easy belt noise diag is to just spray some WD40 or silicone on the offending belt ( inner part of course ). It will make the noise go away for a little while. If you have the nozzle on the can you can spray while running just beware of which way the fan is turning for reasons of getting can or hand hit and the overspray will get you.

 

An easy belt noise diag is to just spray some WD40 or silicone on the offending belt ( inner part of course ). It will make the noise go away for a little while. If you have the nozzle on the can you can spray while running just beware of which way the fan is turning for reasons of getting can or hand hit and the overspray will get you

I'd already lubed the belts before trying to oil the bearing at the front of the pump.

What I didn't try until today was loosening the power steering pump enough to stop the water pump from spinning.
I was loosening the P/S with the engine running and I couldhear the pitch change.

I made sure when the squeal would arise (usually after a minute or two of run time), I then shut off the engine and quickly restarted the engine, squeal was still present SO
I repeated the scenario BUT when I shut the engine off I cut the belt and fired it up right away, noise was gone!!

With that I knew it was P/s or waterpump so spun them both immediately. The P/S pump rotated to slow but when I spin the waterpump I could hear my squeal at a much lower volume.

Changed the waterpump and all is quiet.
Thanks for the input guys!!

 

Thanks for reporting your results. Glad it worked out.

 

Nice! I love when a plan comes together.:goojob:

 

As do I, but daaaamn what a bizzare noise.
I would think with the lubrication from the coolant the seal wouldn't get hard and squeal...maybe it's the bearing itself??
With the pump out and cold it makes no noise.
Oh well....