Can O2 sensors that go bad or that arent working to spec cause gas mileage to suffer?? Do they always set off codes when not working properly? If so, can someone direct me to a place that has them and they wont cost an arm and a leg?? Thanks

 

yes, no not always, www.thepartsbin.com

 

Thanks alot mrb23

 

www.oxygensensors.com...65 shipped