how do you check your o2 sensor to see if its good or not cuz ive been having bad mpg? i checked the faqs doesnt say it in there

 

How old are the spark plugs/wires, distributor cap and rotor, air filter?

 

i dont know..i bought the car like 6-8 months ago so they are atleast that old

 

check these two links out...they show to test the sensor with a multimeter. i tried it but my o2 sensor was reading under 10 ohms which says it needs to be replaced. I bought a new one and that was reading under 10 as well and i tried my s2k cat o2 sensor and that read 13ohms...

http://prelude.openbarr.com/ma...4.jpg
http://prelude.openbarr.com/ma...5.jpg

 

Depends the type of O2 and your resources. The all time best is a lab scope hooked up the same way as a DMM