I have an '02 Cavalier 2.2L engine. Just replaced the coil pacw/a mechanic, on the way home my engine light came on... I am told by autozone that it is the oxygen sensor...Can anyone tell me how to change this myself so I can save my money. I am tired ofpaying the mechanics. Thank for any help received!

 

First try and locate the part, some cars have more than one. Then determine how accessible it is to get to. Having the right tools help immensly. 02 sensors are located on your exhaust system (usually before and after the cat.converter)
Hope this helps !

 

Thanks for your help! I will double check to see how many there are... Hopefully only 1 as they are $50 each. I have been robbed by so many shops [:'(]being a woman, that I am going to learn to do these things by myself. This should get interesting! Have a Great Day!