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A machine that reclaims Freon is needed to remove the old Freon. The system will then need to have a vacuum pulled, and then the new Freon can be added.
if its completely empty should take about 3 pounds
Only if the a/c system is low in charge then you can add freon plus oil as needed to get the pressures back to specs...........
You can put Freon into your 1997 Nissan Pathfinder from the low pressure port. Connect the Freon bottle to the port. Release the Freon into the air conditioning system.
my son's car is a 98 Altima and does not have cool air coming through yet the blower does work will -- if it just freon benng needed. How do we locate the air jnit?
28 ounces of R134a freon...............
Freon R12
R134a
134a
You take it to a professional, the freon you buy in the store is not what your car needs !
not dure if this will help but when i charge a unit either low or complete charge,the jug is weighed before the charge and after to see the weight of freon
r 134a