I'm replacing the O2 sensor in my 1989 109E. The sensor is mounted in the
exhaust pipe under the passenger seat.
I have the special split socket used for oxygen sensors.
It is tight, but it looks like there is enough room to remove this without
dropping the exhaust pipe.
Do I have to break the pipe up at the exhaust manifold to get enough room?
And it looks like the wires go up through the floor of the passenger area.
Do I remove the carpet in the passenger area to get to the plug?