Put it in the low side. The small round valve. Make sure the ac is on.
To add freon to a 1998 Oldsmobile Cutlass, locate the low-pressure service port on the air conditioning system. This port is typically found on the larger diameter aluminum line between the compressor and the evaporator. Remove the cap, attach the refrigerant can's hose to the port, and follow the instructions on the can to add freon while the AC is running. Always ensure you are using the correct type of refrigerant for your vehicle, which is R-134a for this model.
The 1999 Oldsmobile Alero does not have Freon in the A/C system. It contains R134 and not Freon which is R12. As I am sure you do not have the proper equipment to recharge the system plus the fact it is illegal to add refrigerant to a system with a leak, until the leak is repaired, take it to a professional and have the leak repaired. You have a leak or you would not need to add refrigerant.
The refrigerant needs to be added on the low pressure side of the compressor. this is located under the front of the vehicle by the bottom of the radiator. the line has a fitting which should have a blue cap on it. that's where you add the freon.
I am not a tech, but I looked up parts for my Olds on GMparts worldwide and they provided a diagram to show locations of parts. The diagram is located next to Add to Cart and it is called view illustration. It is great. Hope this helps
the low pressure{or suction}line is located under the air filter housing
Buy a kit from auto parts or Wal-Mart comes with instructions
First, your 1998 Mercury contains no Freon which is R12. It contains R-134 refrigerant. You add R134 at the low pressure port. But the fact that you need to add R134 indicates you have a leak. It is illegal to add refrigerant to a system with a leak without first repairing the leak. Seek professional help and have the leak repaired.
Low pressure line Larger line running from compressor
The 1998 Chevy did not come with Freon (R12) installed. Freon was banned beginning in 1996. It contains R-134. You have a leak that needs repairing before adding more refrigerant. It is illegal to add refrigerant to a system with a leak. Seek out professional help to repair the leak.The 1998 Chevy did not come with Freon (R12) installed. Freon was banned beginning in 1996. It contains R-134. You have a leak that needs repairing before adding more refrigerant. It is illegal to add refrigerant to a system with a leak. Seek out professional help to repair the leak.
To add refrigerant to your AC unit, you will need to locate the service valve on the unit, connect a refrigerant charging hose to the valve, and slowly add the refrigerant following the manufacturer's instructions. It is important to be cautious and follow safety guidelines when handling refrigerant.
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