the o2 sensor is located right in the front of the engine on the exhaust manifold. it's that big rusty lookin thing. the o2 sensor is the bolt lookin thing coming out of it with the wire attached. unclip the wire and loosen it with an appropriate sized wrench. you may need some liquid wrench for this to penetrate the rust. once it's out ( it will take some muscle) toss it and simply screw the new one in and tighten it with a wrench. clip the wire back up and you're ready to go.
Be sure and put some anti-sieze on the threads before you install it.
As long as you are not reusing the old sensor you can cut off the wires at the sensor and use a 7/8' deep socket to remove the old one.
need to change more often
1993-2000 ide go with 1994-1999 somewhere in there would work nicest
WD40
Engine Coolant Temperature Sensor.
40 thousands
The Saturn SC2 automobile was a part of the Saturn S series automobiles that was around from 1990 up until 2002. The SC2 looked similar to a Nissan 240 SX and the model was manufactured around 1994-1995.
newdiv
see link below
The air intake sensor is a resistor that goes to the PCM. A schematic can be found in a service manual
I just installed a new CD player into my 97 Saturn SL 1 using this, it should work for your 1994 SC2 because its for 90's and above. http://www.installdr.com/Harnesses/GM-Wiring.pdf
The same way you do with any other car.
Is this actually a question? The "2" refers to the fact that the engine has 2 camshafts... and a few extras.