You may have not enough gaz or a leak and the compressor stops to protect.
Don't know if you have basis in engine, check if the air con compresseur is engaged when A/C is on.
If not you need a specialist to cvacuum old gas, clean, check leaks, put a tracor, new gaz new oil.
If it's not that, you need Bentley Mastercheck to check messages. These are complex cars, with electronic, OBD is there to record what could go wrong. You should start by this and scan with the right tool.
Noise you hear are normal.
97 Continental R