A friend has a 2004 used Pontiac Sunbird with 31,000 miles. It failed the emissions test because of a bad o2 sensor. Would the o2 sensor be covered under a federal emissions warranty for up to 7 yrs or 70,000 miles and be replaced for free by the dealer... Read More

I see that there are two. It may sound foolish, but I was just wondering if there was anything I needed to know before replacing them. I’ve found that nothing seems easy to fix on Grand Ams. As it is, it took about ten four letter words to get... Read More

My car check engine light came on, so I took it in and put it on a computer and that is what they came up with, it needs a O2 sensor, never even heard of it, but I know it makes a big diference in how your car runs. It seems like it is really not wanting... Read More

Pep Boys did an engine diagnostic and they said “no codes came up”. Would the engine diagnostic pick up if the o2 sensor was bad? If not, how would I know? Also, from what I understand there are two sensors. How do I know which one to replace... Read More

And can not having this replaced have caused long term damage or cause ongoing problems? I bought my car used, and when they went to go get a new inspection sticker for it, it turned out it needed a new O2 sensor, and they’re taking forever to... Read More

When I got the exhaust/tailpipe replaced the guy said the O2 sensor was most certainly shot too. How do I replace it? It’s been on there for 16 years. Will it help much for gas mileage or performance? No sensor light going on. No check engine... Read More

Im connecting a perfromance chip from my sensor to the ECU and i need to know what the colors of the wires are, so that i wont use the wrong wires. Posted by jonjustice123  Read More Ø

What is a fair estimate for the following amount of work to be done on my 2001 Nissan Maxima? * Replacing the Catalytic Converter (including the B2 Catalyst and O2 sensor) * Replacing the caliper and cable for the rear emergency break. Thanks! J Posted... Read More

i have a v6 vortec 4.3 liter engine and i have changed out the o2 sensor before and after the catalytic converter, the last one is on the manifold but i can not find it, is there anybody that can help? Posted by Julian S  Read More Ø

I have a Hyundai Elantra and I would like to know if anyone knows a website or any information on how to replace the O2 sensor. I wouldn’t want to take it to a garage because it would be way too expensive. The part itself is expensive so I wouldn’t... Read More