I installed an aftermarket performance header in my 2000 Civic 4D. no problems, beautiful sound, better gas mileage, however my first O2 sensor broke on me and I had to throw it away, so I took another O2 sensor from 99 Civic Hatch installed it but the Check Engine light is still on. Sometimes when I hook it to the check engine device it gives me sensor 1 and/or sensor 2. Sometimes the RPM go down below normal and you feel little shaking.

Any ideas? I already resetted the Check Engine more than one time but same issue. Should I get O2 sensor for civic exclusively?

 

what exact CEL code is being triggered?

 

O2 sensor bank 1 sensor 1, or sometimes bank 1 sensor 2. It's really confusing. I want to turn off the CEL by anyway but of course not by disconnecting it.

 

Pull the O2 sensor and give it a good scrubbing, make sure all of your wires are seated in the plugs properly, try it again.

 

Already did that. Cleaned them also with the air compressor thingy and it didn't work. I removed both of them and went for a drive, the idle like it's going to die. Then I put the O2 sensors back again and same thing nothing changed. Btw the header I bought doesn't come with Cat Converter, which I don't really think it has something to do with the O2 sensors.

 

02 sensors need a solid ground connection, make sure they are grounded well.

A P0420 will pop up without a cat converter.

 

O2 sensors are plugs. Where is the ground for them?

Is this the same as the O2 sensors 1 and/or 2?

 

And I was thinking about getting new exact same O2 sensors.

 

Instead of the CEL description. Please give the numerical code(s)

 

I will when I go to the garage next time. Thanks for the responses.

 

Your title is confusing, is it a B16 or D16? The B16 doesn't have the cat built into the header the D16Y7 does. Where does the new header have the O2 bungs at? Can you take a pic?

 

It's D16Y7, really sorry about that. The problem is I threw the old header away. This is exactly what it looks like http://i40.photobucket.com/albums/e2...exhaust062.jpg

 

Here's a suggestion, I can buy a direct fit cat converter, fit it and weld it if it needs to. It'll come with an O2 sensor bolt. I think this is a probability that it might turn off the CEL off. What you guys think?