I hate these noises...please help

[lt1transam]

So I was having some odd sound's apparently coming from the t-case area. Pulled it and found the output shaft bearing was no good so I replaced it and reinstalled (major pita) it. That seems to have helped. Now I still hear a God-awful grinding or howling sound when slowing down whether the brakes are engaged or not. Also when accelerating there is a crazy whiring or howling sound, only when you are on the gas, no matter what speed you are going, if you let off the throttle it stops. Just replaced both wheels hub/bearing assemblies with brand new Moogs. Brand new ceramic brake pads, brand new rotors. Checked the rear drums and nothing out of the ordinary. Drained the front diff and refilled with Mobil 1 LS. The T-case is sporting the blue stuff fresh from the dealer (Auto Trak II). Haven't gotten to the rear-end fluid yet. Drained and refilled the trans with Lucas and a new filter. So umm, I'm not really interested in a frame-off resto of a 1999 ESC. There's just too much going on here for me to be able to continue guessing and spending time and money on this thing. Any ideas?

 

[Gzes]

Damn was gonna say hub bearings thats what my exploder needs. My rear end on it whines aswell i would check if rear end is low on fluid. Could be ring n pinion on rear end but who knows gotta check first

 

[lt1transam]

That is a really good guess! Just left the mechanics and the pinion bearing is bad and he is just about to take the cover off to check the gears.

 

[lt1transam]

Pinion bearing. Gears and everything are good. Should be done tomorrow afternoon . Man I'm happy to get that out of the way! Gonna drive it a good bit this weekend too.

 

[lt1transam]

Wow, amazing what a new pinion bearing and axle bearings will do!