Where is the PCV valve and OS sensors located on a 2004 Kia Sorento?

O2 sensors are in your exauhst pipes. One "upstream" ( in the section of pipe between the catalytic converter ) and one "down stream" ( in the section of pipe between the catalytic converter and the muffler or in the catalytic converter it self) The sensor will stick out of the pipe and have wire coming out of it. The PCV valve will be a tube going into your intake. Either into the throttle body itself ot into the ducting from your air filter into the throttle body. The other end of the tube will go into the engine valve cover.