need help with squeck

[boother03]

I've got an 03 4cyl with 45k on it, one of my pullies is beginning to squeck but not all the time. I was curiuos if any one else had this occur or had any ideas. I've tried to listen with a stethoscope, but its just to tight to get it to all the pullies and listen to them. I've checked the belt and its in great shape. Any ideas?

[marc780]

Is it the pulley or the belt that is squeaking? Firstly, DO NOt use belt dressing on it - this stuff is a petroleum base product and will eat your belt in a couple of weeks. (I found this out the hard way and so I dont use it any more!).
Use some silicone spray, or armor all gel on the belt. If the squeak goes away, maybe its time to change the belt.
If squak does not go away, shut off the engine and spray some oil or tri flo or other lubricant on ONE pulley bearing at a time. (You are not trying to lubricate it -cause you cant anyway, those bearings are sealed-, you are just trying to isolate the squeak).
then when the squeak goes away you've found the problem part to change.

[carlo$]

tighten your alt belt.

[gdanaher]

Pulleys by themselves have no moving parts so it isn't going to squeek. The shaft it is attached to has bearings that might squeek or the belt running on it might squeek.

If the sound appears to be coming from the belt and it hasn't been replaced, do so.