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By buying an AC charge hose and a can or 2 of R134a freon (depending on how much your car needs) Attach hose to the low pressure side & charge system. Do not overcharge, or you may destroy the AC system.
The port is located on the firewall, top/center.
The orfice can be found either in the ac condinser or at a coupling sometimes at the radator but it is the ac line on the high side I do believe.
Should be (looking at car) right side rear by firewall
Behind glove box
no
You want to charge the system on the low side fitting which is blue. Red is the high side.
r134.
You have to find the black or blue cap under the vehicle i ask a guy working on my car and he looked and showed me i charged the system.
1992 Pontiac grand am ac relay locationi found the relays. they are in the center of the firewall next to the blower case. they are in a case with cover that is bolted to the firewall.
with ac on 16mpg,ac not on 18mpg
on the passenger side next to firewal