Does anyone know where the low side service port is at? I am in the process of recharging the AC system with R-134a but I can't seem to find the service port to even begin the job. Is there anyone out there that knows where it is at? I would greatly appreciate your help. My AC will work in the morning when it is cooler, but since I am in Phoenix, Arizona the temperatures rise to at least 100 degrees F and for some reason the AC air turns hot. I've never had this problem for the last 3 years I have had the car. I think I may have a refrigerant leak that is causing this problem. Does anyone have a clue or similar problem to this? My car is a 2000 Ford Focus ZX3.