I was going to check the AC pressure on my MINI. What low and high levels should the MINI have?
I know it is partly dependent on temperature, and living in the south it'll probably be 80 tomorrow when I check it.
Any advice would be appreciated!

 

I'm in Houston, TX, and just a week ago I had to replace some components of the AC line. After the vacuum, hooking up the gauges as I pump freon into the system I get 35-40psi on the low and about 135-145psi on the high. That's 80-85 degrees outside, and make sure your ambient temperature sensor stays plugged if you ever remove the front bumper for whatever reason. When I initially did mine, my ambient temp sensor was removed because I had to remove the bumper to get the car into service mode, and without that sensor, ac compressor won't kick on. (The ambient temperature is mounted on the back of the front bumper, so be careful if you did disconnect it for whatever reason)

 

Download a pressure chart.