However, you do have a expansion orfice tube. This is located in the a/c line up against the firewall on the passenger side. There is a coupling. Disconnect the coupling and you need to rent tool extractor. You insert the tool into the tube and extract the orfice tube out. This also has a filter in it that can become clogged. Not hard to replace, but you have to evacuate the system and recharge to do it.