I replaced every O-ring in the system plus I replaced the accumulator and the expansion valve under the dash. It was checked for leaks both times and things ended up leaking later. The first leak that occurred was at the pressure switch on the accumulator. The switch itself sprung a leak. After I fixed that the expansion valve stuck. I was lucky I was able to recover the freon that time. After I replaced the expansion valve, the A/C worked great for about a week or two and then something else sprung a leak. I never went back to have the second leak checked. At that point I figured the only way I would have the A/C working would be to replace everything. I started checking prices and parts for availability and that's when I pretty much gave up.
I bought a Crown Vic Police Interceptor for about the price of what the parts for the A/C system would have cost me. The A/C in that car works flawlessly and at times can feel almost too cold.
