Ok so I replaced my belt 2 months ago. Now one of my pulleys is squeeking all the time. I think it is the idler pulley. Is there an easy fix or do I have to replace it?

any ideas?

 

It is most likely the idler. It is a very common problem on 3.0L Rangers. We had the one on our '02 3.0L replaced under warranty and the noise has not come back yet. Idlers are not very expensive (if you do the install yourself), so I would go ahead and replace it.

 

WD-40 works for a while.