In my son's 09 OB 2.5i the air conditioning appears to not work or not work very well at all. I've added a bit of R134a to it with an old test gauge fill kit that I do not trust the gauge on at all. It reads a bit on the high zone when connected to the low pressure side fitting. The compressor clutch cycles on and off every ten seconds but when it flips to on it is off again in ~1 second. Unsure if that means low or high charge or something else completely.