5th Gear Member
Join Date: May 2008
Location: San Francisco, CA
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you have 2 ports in an A/C system.. a high pressure port(up to 250psi); and the low side port(around 25-40psi) depending on how much freon is in your system, and depending on how efficient your compressor is.
If you have lost freon and need to re-charge, it simply means that you have a system leak somewhere. Knowing that, a "re-charge will only give u a temp remedy - it being that when u have a leak, air/moisture also seeps into the system thereby making your system inefficient(freon and air/mosture don't like each other).
ood way to do your repair. Have your system vacuumed(old freon evacuated) and then recharge to specs using the newer R134a freon cans that contain a "stop leak" solution, and a dye tht can help u identify where the leak might be at a future time :-)