1996 Kia Sephia O2 sensor and crank sensor

Hi, The 02 Sensor is mounted on the cat. converter, some are mounted on the exhaust manifold. most cars have two one before the cat.converter, and the other after the cat. converter or in the pipe following it.The Crankshaft sensor Could be in Various places, First look at the Damper Pulley, Under The car. also look For wiring To That area.It could also be inside the timing belt cover.If it's not there Then it's mounted in the engine block Near the bottom.sometimes,On the Firewall Side.Be very carefully Removing It ,If it goes into the block. you Should Have A mechanic do this For You.

Hope This Helps You,
Good Luck
Edward S.