it contains no Freon. It contains R134a refrigerant. If it need refrigerant that means you have a leak. It is illegal to add refrigerant without first repairing the leak. Seek professional help with the repair first.
Your 1990 has R12 refrigerant in it which isn't available anymore at parts stores. To add refrigerant to your vehicle you will have to get the a/c system vaccuumed and retrofitted to accept new r134a refrigerant and pag100 compressor oil. You can take it to a shop to get it vaccuumed and retrofit it yourself with kits from your local Autozone. -broncomudder89
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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.
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.
Open the hood on your car. There will be a tube with a label on it that signifies it is for refrigerant. Put the hose on the coolant can to the connector on the tank and hold the button on the can down in small bursts.
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.
You add refrigerant to the vehicle ac system through the low side port. All vehicle are so there is a website with helpful information about your vehicles ac system, including with the low side port is locateded www.idqusa.com