Civic EG

i just installeld my header last night and now my cel is on. i disconnected the battery for >10 seconds and still on. is it going to run rich now b/c of this? or do i need to get it tuned so the ecu wont think there is a problem. also i was thinking of replacing the o2 sensor. could that help?

if it helps i have a d16z6 w/ cold air intake and header.

thats weird. just changing the header like you did should not throw a code. but i would say it has to do with the o2 sensor...

did you check the code? http://civic-eg.com/viewtopic.php?t=1558

I also bet it is the o2 sensor, they are fragile. They can break if you drop them on the floor.

x3..
Check you O2 sensor again and make sure that you put it back tight, then try disconnecting the battery for 5mins.
Well at least that's what I did when my car gave me a cel.

yeah i think im going to go ahead and change the o2 sensor. the cel is blinking, it doesn't come on when i turn the car on at first. then when i shift into reverse, it comes on w/ no blinks. and also now my header is making a puttering sound. not normal is it?

an exhaust leak? see if you can find exactly where it's coming from

so apparently its 41 Primary oxygen sensor heater . whats that?

just my o2 sensor?

ya, its inside ur o2 to help warm up the o2, so your car will go into "close loop" quicker..

so i need a new o2 sensor right?

YES

ChicagoMike wrote:YES

xo2

lol. ok thanks guys. what is happening to my car since my o2 sensor is messing up?

proably running a lil rich.. so its adding more fuel... im not really sure of all the o2 proablems and symptoms..

its stayes in "open loop" longer so ya your runnin rich
and if you can eventually runin ur cat converter, and runin your spark plugs and eventually runin your motor..

so id change is asap
and make sure its oem too

thanks guys. it was broken for a week so i changed it today.