Thread: Can I take my o2 sensor out to see if my cat is clogged?

My initial thought would be no. However, perhaps unbolting the downpipe that leads to the cat would help you troubleshoot. Hopefully one of the gurus will chime in.

Yeah you can pull out your upstream o2 and drive around and see if it gets better and if it does then your cat is probably clogged. What symptoms are you having?

Originally Posted by dsmuts

Yeah you can pull out your upstream o2 and drive around and see if it gets better and if it does then your cat is probably clogged. What symptoms are you having?

Won't unplugging the upstream O2 sensor cause the car to run like crap either way, just due to how the computer uses the data?

For as short of a period you are going to have it taken out (as in removed from the exhaust), it wont matter.

Here's an idea from the "I live in Florida so I don't care if it poisons the environment" handbook: Remove the Cat and U-Bend either way.

Yes you can. Don't drive it hard though, because it won't know what the fueling is and therefore you don't want to beat on it.

Whenever I had my front o2 out it ran like ****. Going easy on it was alright but if I jumped on it, it said hell no