otakueric

is this important? its just hanging since i did the swap
but the cel is annoying.

RTE117

I pulled my off for a while with my test pipe, noticed nothing but that annoying CEL. Still throwing a 63 after the Catco went in.

u2civic1

do u have obd1 or 2 cuz obd1 it doesn't need the second one

oneslowcivic

had same 'problem', got a bung made in my pipe and plugged it in...no codes and good gas mileage on obd2

otakueric

its obd2

otakueric

ttt

n_23_s

It is important. But if you want the cel to go away this may work b/c my friend did this with his. He taped it up 1st and he put tin foil on the end to cover the o2 sensor up. Try it! wouln't hurt.

ekb18cCivic

if your CEL is on your motor is in limp mode so you are running rich and eating gas ... OBD2 requires the second O2 sensor... convert over to OBD1 and solve your problem.. get a jumper harness and OBD1 ECU (which one you get depends on swap) ... if not get a highflow cat and put your o2 sensor back in.. i wouldnt drive around with a cel on all the time.. you'll never know if you are throwing a new code..

Padawan

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ekb18cCivic &raquo;</TD></TR><TR><TD CLASS="quote">i wouldnt drive around with a cel on all the time.. you'll never know if you are throwing a new code.. </TD></TR></TABLE>

You're correct about this, but the car won't be in "limp mode". The job of the secondary 02 is just to tell the ECU whether or not the cat is functioning properly. I'd personally just install it in a bung in the exhaust stream, but if you get tired of the light or are concerned about the ability to be warned of other codes, I'd give one of the low-cost 02 simulators a try. I believe that the one I've seen is backed by a money-back guarantee, so you don't have much to lose.

Edit: I found the link for the simulator I was talking about. I believe they were also running a special on H-T for $25 shipped, so you may want to ask about that if you order one:

http://www.o2simulator.com/

barto

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by u2civic1 &raquo;</TD></TR><TR><TD CLASS="quote">do u have obd1 or 2 cuz obd1 it doesn't need the second one </TD></TR></TABLE>

i have an obd1 conversion on my ek, does it matter which one i remove?

hatchbackhonda

the o2 simulators work very well they just send a reading to the computer my buddy had one on his si they are a cheap fix

n_23_s

did you try the tin foil covering up the sensor tip?

otakueric

alumin foil will fix it?

EE_Chris

It might work...it does for some people. The 2nd O2 is used to detect catalytic converter health. The converter uses O2 to do its job so the signal is puts out is usually a pretty steady .6v -.8v. If you cover the tip with Al foil you are effectively taking away 'o2' from being sensed. So give it a try....its free.

C_Civic

I had the same problem....but instead of people helping me most of them flamed me and i had to take things into my own hands with some help....i just used the O2 sim. and its been working fine

rexandfx

I bought a 2 sensor header for my 2 sensor system, But my primary o2 sensor's threads were messed up.

So what I did, was swap my secondary o2 sensor for the primary one, and put a plug in the secondary hole on the header. Then just plugged the sensor into the clip, so I wouldnt get a CEL. Then just wrapped it up around some wires up by my tranny.

No problems yet? And no CEL.

otakueric

if i were to wrap the foil on the o2 sensor, should i use a rubber band? or would that somehow melt?

rexandfx

I didn't have to use aluminum foil or anything, But If you want to I'd use a couple breadties, or twist ties, or even a ziptie.