Oxygen sensors are screwed into the exhaust on both sides of the catalytic converter.
there are two O2 sensors one is on the exhaust just behind the fire wall the other is just underneath the exhaust manifold
They are screwed into the exhaust near the engine.
Yes, you unplug and unscrew them.
They are the two wire sensors on the front of the transmission case. The input is closer to the engine.
No you do not.
One on a four cylinder, two on a six cylinder.
It has one. It is located on the top rear of the transmission bell housing.
On crankshaft position sensor, one camshaft position sensor.
It is the part between the intake and the air cleaner. It has electrical sensors and cables attached to it.
Answeron the rear of the engine, towards the transThe cam sensor is in the distributor.
upsteam sensor may be in the exhaust manifold,down stream is after the cat., in the exhaust pipe.