I know this is an old thread but figured I would bump this up. I have been having the same kind of issue with my AC lately. When I turn on the AC and the car is just under 1K rpms and the car is in drive, it makes an aweful noise. Almost sounds like something is lose and vibrating. As soon as I turn the AC off by pressing the button on the HVAC the sound goes away. Not really sure what it is. Not sure if it is just out of refridgerant or oil. The air is still cold that is blowing inside when it is on. The car just started doing this. I am going to try one of those recharger kits to see if it does anything.
Any thoughts from others?
Thanks
-Mike
