The low side schrader valve. Exact location can vary, but if you go to the passenger side, follow the refrigerant lines from the firewall, you should find it. It'll be the one with the blue cap, if it still has that. Otherwise, it's the smaller of the two schrader valves.
Low side schrader valve... follow the refrigerant lines. On either the large line or on the receiver-drier, the port will be there.
To add refrigerant to a Dodge Dakota find the suction hose of the A/C system. On the suction hose locate the port to add more refrigerant to the system.
134a refrigerant
Many home AC units are sealed, and there is no way for a homeowner to add refrigerant.
You do not as R134a is what is approved for that car. If you could find R12 it would cost you near $100.00 a pound.
Many home AC units are sealed, and there is no way for a homeowner to add refrigerant.
You add refrigerant at the low pressure port but you do not add Freon. You add R134/134a. If you are having to add refrigerant then you have a leak that needs to be repaired first.
If you are having to add refrigerant, then this means you have a leak, and you will be adding refrigerant again in a few months. It is illegal to add refrigerant to a system with a leak without first repairing the leak. So, my advice is to take it to a professional and have the leak repaired and refrigerant added with the proper equipment, which you do not have.
There should be a fitting with a screw top on it somewhere in the AC hose in the engine compartment. Use R134A, not R12
First off if it is low of refrigerant then it has a leak. It is illegal to add refrigerant to a A/C system without first repairing the leak. You have neither the tools nor the skill to repair the leak, and to add the correct amount of refrigerant. Take it to a professional shop with the proper equipment and knowledge to repair the system correctly.
Do not add refrigerant. You must completely evacuate the system, then fill it _by_ _weight_ to prevent overcharging. Overcharging can cause leaks and/or compressor failure.
lose the heat from the refrigerant
Refrigerant is added to a 1997 Pontiac Grand Am by removing the cover on the low pressure coolant line and attaching a can of refrigerant. The valve on the can is then opened and the system will automatically pull the refrigerant in.