Can't figure out what part i need
4 Answers
This could be a lot of things. Check for vacuum and exhaust leaks. Make sure the engine is tuned up and that you have a clean air filter. You could try running a good fuel system cleaner too. A O2 sensor could be bad or the cat itself may be bad.
In my experience that code is almost always a bad cat. I would guess about 95% of the time.
Bad cat. Make sure that your engine is also in good mechanical shape, I have seen a lot of oil blow by destroy cats quickly on Integras. If your engine is not burning any oil between oil changes, then you should just replace the cat.
