i need to replace my o2 sensors i was driving my teg in high way and my check engine light turned on a mechanic said i need to replace my o2 sensors i dont kno how !><

 

did the mechanic told you which o2 it was? well it's easy to replace, first jack the car up, use a jack stand to for extra safety ...find the o2, then take a 22mm open wrench or an adjustable wrench if you don't have the 22mm wrench to take out the old o2...then pop in the new one, tighten it up and your done..Good luck

 

my friend replaced the top one yesterday for $10 the bottom one i have to do myself because he is busy all week :{

 

if u still need it done, come through my place, ill do it for you.