AboutRoger Patricio Expertise Can answer all Volvo car questions. European and Canada spec cars are different but I can try to help you.
Experience I am a Certified Volvo Tech at in Independent Volvo Repair shop. I grew up around Volvos and decided I wanted to do it professionally. I worked at the dealer for about a year then I went to work at an Independent shop which I have been with for 10 years.
Expert: Roger Patricio Date: 6/10/2008 Subject: S70 Air conditioning
Question My wife's 2000 S70 AC (145,000) is out. If you add a refrigerant, it will work for awhile, but will indicate overcharged. I have gauges and refrigerant, but no data. How much (in PSI) does this system take, and is there some other troubleshooting that I can do? I also have a "sniffer" for this type refrigerant.
Answer Nathan, The system hold 1.63 lbs of refirgerant and its very picky. at 2000 rpm your PSI should be at about 28-30 PSI. At rest at around 40-42. You should be doing this from the low side port. You may be experiecing at clutch that needs reshimming. Common issue on these cars. Hope this helped. Roger
