70chevy03ss Posted May 25, 2008 Report Share Posted May 25, 2008 I know someone has asked this in the past (but my search button doesn't work) but when should I change my 02 sensors.. Or do I have to. I have 77,400 on it. Truck runs great and there are no lites on saying that I have to. Just thinking with the gas prices being the way they are I just want to make sure the truck is running good. I aam going to do a new belt soon and fuel filter and oil change BLAH BLAH BLAH... Just a simple question. Please let me know thanks guys... Quote Link to comment Share on other sites More sharing options...
kersey Posted May 25, 2008 Report Share Posted May 25, 2008 IMO i would wait until 100,000 miles or when the light comes on. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted May 26, 2008 Report Share Posted May 26, 2008 If it isn't broken, don't fix it...........until you see the SES light come on and codes are thrown for 02 sensors, I would leave them alone.......... Quote Link to comment Share on other sites More sharing options...
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