O2 sensor, to change or not to change

[oncewaspfd]

Just got my Budbuilt skid plates and I was wondering if I should change the O2 sensors first? I have 131,000 miles on an '02. Bought it with 126,000 from dealer. I haven't got any codes and my last long trip I averaged 19 -20 mpg. Thought while I was down there I would change them and not worry about them for a few years.

 

[SR5Runner97]

Not broke. Don't fix it. If it's OE some will last 200k and some will last less. Don't worry about it. Would be a waste of 40$ of your splicing or 120 if you're buying OE.

 

[MStudt]

Just got my Budbuilt skid plates and I was wondering if I should change the O2 sensors first? I have 131,000 miles on an '02. Bought it with 126,000 from dealer. I haven't got any codes and my last long trip I averaged 19 -20 mpg. Thought while I was down there I would change them and not worry about them for a few years.

If your not getting any codes, and you mileage is still that good. I'd let it be.

 

[JayRolla]

My o2 just failed at about 225k miles. I still need to swap. Just drove about 100+ miles yesterday mountain highways and still got 16.8mpg even with the front o2 dead.