Ok when I start my car I have no noise from hood. When I go to put on ac I have this skreaking noise ! I have a b20 in the car. If this helps thanks for any info.
I opened hood and checked it sounds like the fan bearings are bad or as if the fan is hit the outershell slighty
Take off all your belts, then spin each acsesory by hand to find the bad one. Don’t wait for it to go or it will lock up on you!
i’m pretty sure it’s the bearing on the compressor. mine does it too. i avoid using the ac since it sucks up my gas.