I just recently purchased a 2000 camaro z28.

The previous owner told me the AC blew cold but made a noise when you accelerate .

My mechanic told me that the bearing was bad , so i replaced it. AC blows ice cold and works perfect. But when i accelerate it makes a whistling kind of noise when i turn the AC off the noise stops completely..

What else could it be ?

pulley ? clutch ?

thanks guys . look forward to be a contributing member to this forum .

also if this is not in the right place please direct me to where i should post these kinds of questions at.