I have a 2007 Mazda CX-7 and had to replace the A/C compressor last year in October(?). ReMan compressor had 4oz of oil in it. Read someplace to make sure it had 6oz. I did add approximately 2oz of oil. Vacuumed it down and let it hold for about an hour, started to put R-134 in it. It only took like maybe 2 oz of Freon and won't take anymore. Compressor engages but no cool air in cabin. Any suggestions on what the problem may be?

 

Most likely your expansion valve is bad. you need to connect gages and check what is the pressure at each side when the compressor is running.

 

Thanks for the advise!