Over the past few weeks I've had a chirping/high pitched soft squeak developing on cold starts. It is not squealing like a belt in need of tensioning. *It originated from what looks to be the idler pulley/alternator pulley area. Took a real good listen around and I think I have it fairly isolated. I took a video to help better covey the noise to you guys. *Im doing a major maintenance in two weeks, so I wanted to go ahead and order any parts I may need now. Take a listen. Any trouble shooting will help greatly!
Additional info, belts were changed at Infiniti 6 months ago. Noise goes away after 20 minutes of driving roughly 55mph. I.e. the noise will often stick around 10-15 minutes after it has been at operating temp. Other times, I have to really get on it doing a customary WOT 1st-2nd high rpm pull for it to go away, and this is after the initial 20 minutes of driving.