What are the steps in testing for a bad A/C compressor? I'm good with my hands, but not very familiar with anything that has to do with A/C. My compressor is slightly hard to turn in the center, I'm not sure if its ceased up or not. My system has the right amount of refrigerant in it according to a cheap can of EZ-Chill. How much does it cost to get my Durangos a/c system evacuated and recharged? I have rear air. Thanks in advance.