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"Step-By-Step Guide: Adding Freon to Your Car's AC System"

Air Vents
Make sure cold air is blowing


  1. Find the low pressure side port. It's usually on the left side of the engine bay, behind the firewall. It's a small section of metal pipe with two rubber hoses coming off each end.

  2. Connect the Freon can to the port. Screw the dispenser hose and gauge onto the can of Freon. Pull back the outer slip ring, push it on, and release the ring.

  3. Slowly add Freon to the car AC system.

  4. Check the pressure so you don't overfill the car AC system.

  5. Check the air conditioner to see if it's blowing cold air.

Most cars will hold between 28 and 32 ounces of Freon, that is about 2 cans of Freon.

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