New Whining Noise

nissan
sentra

#1

I have a 99 sentra GXE with 208k miles. Still runs great. It recently started making a whining noise I can hear pretty good. Only makes it when the a/c is running and fluctuates with accel/decel. Doesn’t make the noise with the fan on and a/c off. Any advice is appreciated ad I’m not mechanically inclined.


#2

Check the bearings in the sepentine belt’s tensioner and its idler pulley.
Hopefully is coming from those areas, rather than from an A/C compressor that is about to seize.


#3

I think just have the serpentine belt replaced. Any bad bearing would make a chirping sound or die a quick death if it was squealing.