Does anyone know how to disconnect the electrical coupler on the G13BB HO2S Sensor?
It is stuck behind the engine between the head and the firewall. It is extremely difficult to get at. The sensor has a green coupler body, the main harness loom has a grey body. There is a lock tab that seems to need to be pressed in with a screwdriver or similar, but I have tried pushing and lifting to no avail. See attached photo (nearly impossible to get this shot too!)
