squeaking sound...help?

[Talon11]

For about the last month, my car has been making a squeaking kind of sound whenever I go from excellerating to coasting. It only happens when upshifting or letting off the gas from between 3 and 4k rpm. At first I had thought that it was just my shift linkage squeaking, but I found later that it makes the sound whether I shift or not, so it has nothing to do with the linkage or the clutch. Since it occurs during a change of torque to the car, is there a possibility it could be my transfer case slipping or something? Any Ideas?

 

[Lurker]

Does it also make the squeaking sound when you're just revving the engine in neutral ?
My car does that, and I think it's the BOV. I have a crushed 1G BOV.

I haven't figure out how to fix that.

 

[mattn]

check your belts..

 

[mitsutuner]

Had a shrill noise coming from my motor, found the TB to be very loose so jumped into the TB nightmare. I found the TB tensioner pulley, the idler pulley and the bal shaft pulley were all completely dry. pried off the seals, flushed with degreaser and packed full with high-temp grease.Have the belst back on now but have questions regarding the timing of the bal shafts. My understanding is that the oil pump bal shaft is in correct phase when if you rotate the bal shaft timing mark to straight-up and then release, it rotates towrds the timing mark on the motor. Is there a similar procedure for aligning the ther bal shaft in phase? It looks like the bal shafts rotate 2x for every crank pulley rotation. I know there is a way to insert a screwdriver into an access hole to align these shafts, but can't seem to locate the plugs and appears there is not enuf clearance to get in there with a screwdriver--so what's the alternate procedre for timing the bal shafts?
What is the verification procedure for cranking the motor thru by hand--basically, given all the horro stories, would like to make sure all is correct before firing it up--OK,OK,yes, I'm totally paranoid about breaking the motor--any advice greatly appreciated--gregorio