buy 2 cans of R134 and thetool with hose with a pierce and control knob. Crank engine, cut AC on high blower and windows closed. Find the low side drier cannister and filler service port. Attach can hose to low side fill port- turn knob clockwise to puncture can and counter clockwise to release freon into system. Watch and feel drier as it will be getting cold - or should be. If you have poor AC then one can may do the trick. Be careful after that -that you do not add too much from another can. If you can get 40 degree air out of the vents you are doing goood. Too much freon can damage the compressor in cooler weather if you use the AC. type in RS12A on your search engine. It's an alternative gas.
In the top of the radiator but be sure you've put all the pipes back on
R12-if it has ac of course.
The low side port, which is the smaller one.
You can add Freon to your 2001 Buick Century air conditioning system through the low pressure port. The low pressure port can be found on the top of the air conditioner compressor.
In the low side ac service port.
freon usually goes on your condinser there should be a place to add collant on your condinser which is a silver cylinder
You do not want it to run on low freon as it will burn itself up. There is a low pressue switch that tells it not to run if the freon pressure is below a certain point. To make it run; add freon.
The easiest way is to add freon and an oil with a dye additive and use a florescent light and yellow goggles to pinpoint the leak/leaks........
Go to your local auto parts store. They will have kits with directions for you to do the job at home.
You don't add Freon as it has R134a not Freon. You add it to the low pressure side which is the larger hose.
Take it to the a auot shop. you can not add freon
Contains no Freon. Freon was banned beginning in 1996.