Hello, new to the site. I have a 2001 volvo s80. My a/c system was not as cold as it should be and the compressor keeps cycling every approx. 15 seconds. The system was evacuated, couple of o-rings replaced near expansion valve. the system was recharged to specifications and no leaks detected. My problem is not much better, still not that cold and the compressor still cycling rapidly (ever 15 sec.) Anyone have any ideas?

If its cycling that much, something else is wrong. It could be a bad clutch on the compressor or I still would go back to a low refrigerant scenario.