4.0 ohv squeaks with serpentine belt off?

[wetplugs]

My wife's 99' 4.0 ohv explorer with 93.5k on it makes a intermittent squeak even with the serpentine belt off. I sprayed silcone on the crank/harmonic balancer to see if it was the crank position sensor assy scrapping. It is a hi pitched metallic scrapping sound. Not a grinding. No set pattern comes and it goes. Maybe a motor mount, because I can make it go away when I give it gas in drive with the brake on. Any ideas? Ever see this? I would greatly appreciate any input.

 

[410Fortune]

did you try spraying the lubricant on any of the other pullies?

How long does it run with no alternator hooked up? hahaha

 

[wetplugs]

I let it idle long enough to see if the squeak was there. Why don't you pull your belt off and see if the engine seizes from heat or the battery dies first. ha ha