O2 Sensor Bypass
I know "search" right? but the search engine is down and I need to know this fast.
I need to do my NYS Inspection on my ITR on this month but I have a CEL (O2 sensor) and I was wondering if I buy the O2 bypass. Would this eliminate the CEL and if so, how is the computer receiving the signal from the bypass as "standby", "waiting" or is just fine as if the sensor was there on the bung hole.
Also who was the one that was selling this O2 bypass in here?
any input will be greatly appreciated my fellow ITR people, thank you in advance
I need to do my NYS Inspection on my ITR on this month but I have a CEL (O2 sensor) and I was wondering if I buy the O2 bypass. Would this eliminate the CEL and if so, how is the computer receiving the signal from the bypass as "standby", "waiting" or is just fine as if the sensor was there on the bung hole.
Also who was the one that was selling this O2 bypass in here?
any input will be greatly appreciated my fellow ITR people, thank you in advance
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C R Spec »</TD></TR><TR><TD CLASS="quote">
Would this eliminate the CEL and if so, how is the computer receiving the signal from the bypass as "standby", "waiting" or is just fine as if the sensor was there on the bung hole.
</TD></TR></TABLE>
AHHHH I NEED TP FOR MY BUNG HOLE TOO
I know that wasn't helpful but I couldn't pass it up.
Would this eliminate the CEL and if so, how is the computer receiving the signal from the bypass as "standby", "waiting" or is just fine as if the sensor was there on the bung hole.
</TD></TR></TABLE>
AHHHH I NEED TP FOR MY BUNG HOLE TOO
I know that wasn't helpful but I couldn't pass it up.
I think what you are looking for is not a bypass, but rather an O2 sensor simulator. Here is a link to a site that sells them.
http://www.defcon-racing.com/o2sim.html
http://www.defcon-racing.com/o2sim.html
http://www.mileliminators.com/
They say its for a Mustang but works for Honda.
They say its for a Mustang but works for Honda.
Or you can just make one

I don't think the diagram is perfect, but I know there were a few people on here that built one so they should be able to point you in the correct direction. Hopefully the search will come back up soon.

I don't think the diagram is perfect, but I know there were a few people on here that built one so they should be able to point you in the correct direction. Hopefully the search will come back up soon.
I have the same kinda O2 sensor simulator, but while it may not throw a CEL, my mechanic/car builder told me that it just leaves a "waiting" code and the car cannot go through all of its readiness cycles and the car will still fail.
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AssPenny »</TD></TR><TR><TD CLASS="quote">Or you can just make one

I don't think the diagram is perfect, but I know there were a few people on here that built one so they should be able
to point you in the correct direction. Hopefully the search will come back up soon.</TD></TR></TABLE>
I tried making one of these for my gsr and it started smoking...
I ended up just pluging the o2 hole and wraping sensor with foil and hoseclamping it up there. This worked for awhile. But finally just put the sensor back in the pipe. and delt with the CEL.

I don't think the diagram is perfect, but I know there were a few people on here that built one so they should be able
to point you in the correct direction. Hopefully the search will come back up soon.</TD></TR></TABLE>
I tried making one of these for my gsr and it started smoking...
I ended up just pluging the o2 hole and wraping sensor with foil and hoseclamping it up there. This worked for awhile. But finally just put the sensor back in the pipe. and delt with the CEL.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C R Spec »</TD></TR><TR><TD CLASS="quote">I know "search" right? but the search engine is down and I need to know this fast.
I need to do my NYS Inspection on my ITR on this month but I have a CEL (O2 sensor) and I was wondering if I buy the O2 bypass. Would this eliminate the CEL and if so, how is the computer receiving the signal from the bypass as "standby", "waiting" or is just fine as if the sensor was there on the bung hole.
Also who was the one that was selling this O2 bypass in here?
any input will be greatly appreciated my fellow ITR people, thank you in advance</TD></TR></TABLE>
If you get a "bung plug" (lol
) you can just pull the O2 into the cabin right behind your radio and wrap it in aluminum foil... reset your ecu and voila.. no CEL... just make sure you wrap it well enough that not too much air gets in... or the ECU will know something is up... (damn smart *** OBD2 ecus
)
Whatever floats your boat... there are several "cheap" solutions to your problem
Oh yeah, BTW, you'll probably want to tape up the hole where the rubber gromet used to be... I tried taking off the gromet and put it on my wide band the same way as the OEM O2... but it was hella hard..
I need to do my NYS Inspection on my ITR on this month but I have a CEL (O2 sensor) and I was wondering if I buy the O2 bypass. Would this eliminate the CEL and if so, how is the computer receiving the signal from the bypass as "standby", "waiting" or is just fine as if the sensor was there on the bung hole.
Also who was the one that was selling this O2 bypass in here?
any input will be greatly appreciated my fellow ITR people, thank you in advance</TD></TR></TABLE>
If you get a "bung plug" (lol
) you can just pull the O2 into the cabin right behind your radio and wrap it in aluminum foil... reset your ecu and voila.. no CEL... just make sure you wrap it well enough that not too much air gets in... or the ECU will know something is up... (damn smart *** OBD2 ecus
)Whatever floats your boat... there are several "cheap" solutions to your problem

Oh yeah, BTW, you'll probably want to tape up the hole where the rubber gromet used to be... I tried taking off the gromet and put it on my wide band the same way as the OEM O2... but it was hella hard..
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DC2fanfoy »</TD></TR><TR><TD CLASS="quote">If you get a "bung plug" (lol
) you can just pull the O2 into the cabin right behind your radio and wrap it in aluminum foil... reset your ecu and voila.. no CEL... just make sure you wrap it well enough that not too much air gets in... or the ECU will know something is up... (damn smart *** OBD2 ecus
)</TD></TR></TABLE>
If you do this, what is the ECU signal would be reading under the O2 Sensor? Would it pass Inspection?
) you can just pull the O2 into the cabin right behind your radio and wrap it in aluminum foil... reset your ecu and voila.. no CEL... just make sure you wrap it well enough that not too much air gets in... or the ECU will know something is up... (damn smart *** OBD2 ecus
)</TD></TR></TABLE>If you do this, what is the ECU signal would be reading under the O2 Sensor? Would it pass Inspection?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C R Spec »</TD></TR><TR><TD CLASS="quote">
If you do this, what is the ECU signal would be reading under the O2 Sensor? Would it pass Inspection?</TD></TR></TABLE>
The O2 will still be attached to the main harness and will still be active as if it was plugged into the secondary O2 bung... it just won't be reading exhaust gases, and instead reading from the air in the cabin through some layers of tinfoil.
You might want to test this out before bringing it to emissions, as I remember, the first time I did this, I did still get an CEL after a several hundred miles. After I tightened up the foil and tied it back behind the radio console (near where it used to go down through the floor), it's been several thousand miles since my last "secondary O2" CEL.
I am assuming that you are wanting to do this to pass visual inspection (as a CEL automatically fails you for that part)... if this is the case, you'll probably want to hide the secondary O2 somewhere out of sight, as a dangling secondary O2 probably does not sit too well with inspectors...
However, as for the actual emissions test... I have no idea if you'll pass... the secondary O2 CEL was probably trying to tell you something...
Do you still have a cat? Then again I've heard of some people with TPs and gutted cats pass before... who knows?
If you do this, what is the ECU signal would be reading under the O2 Sensor? Would it pass Inspection?</TD></TR></TABLE>
The O2 will still be attached to the main harness and will still be active as if it was plugged into the secondary O2 bung... it just won't be reading exhaust gases, and instead reading from the air in the cabin through some layers of tinfoil.

You might want to test this out before bringing it to emissions, as I remember, the first time I did this, I did still get an CEL after a several hundred miles. After I tightened up the foil and tied it back behind the radio console (near where it used to go down through the floor), it's been several thousand miles since my last "secondary O2" CEL.
I am assuming that you are wanting to do this to pass visual inspection (as a CEL automatically fails you for that part)... if this is the case, you'll probably want to hide the secondary O2 somewhere out of sight, as a dangling secondary O2 probably does not sit too well with inspectors...

However, as for the actual emissions test... I have no idea if you'll pass... the secondary O2 CEL was probably trying to tell you something...
Do you still have a cat? Then again I've heard of some people with TPs and gutted cats pass before... who knows?
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 255.255.255.255 »</TD></TR><TR><TD CLASS="quote">holy crap...110 cad for a o2 simulator? you can build one at radio shack for $15 USD
</TD></TR></TABLE>
like?? different way??
</TD></TR></TABLE>like?? different way??
Well, I found a way to get rid-off the CEL if you have a testpipe or high-flow cat that has the bung hole in it. I found this info on the S2KI Forum.
Here is the link to the thread:
http://www.s2ki.com/forums/ind...&md=1
and this are some of the pictures that explain more or less the procedure:




Modified by B18C R Spec at 2:17 PM 6/7/2005
Modified by B18C R Spec at 2:17 PM 6/7/2005
Here is the link to the thread:
http://www.s2ki.com/forums/ind...&md=1
and this are some of the pictures that explain more or less the procedure:




Modified by B18C R Spec at 2:17 PM 6/7/2005
Modified by B18C R Spec at 2:17 PM 6/7/2005
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18C R Spec »</TD></TR><TR><TD CLASS="quote">Hope it helps ... This method will take care of the CEL but I don't know if it'll pass Emissions</TD></TR></TABLE>
Wow, I never thought of that. Delay the O2 sensor response by pulling it out of the exhaust stream by an inch. Neat.
If the emissions test is just a OBD2 reading, it'll pass.
My experience is that a high-flow cat will start blowing dirty before a CEL comes on.
Wow, I never thought of that. Delay the O2 sensor response by pulling it out of the exhaust stream by an inch. Neat.
If the emissions test is just a OBD2 reading, it'll pass.

My experience is that a high-flow cat will start blowing dirty before a CEL comes on.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Opie »</TD></TR><TR><TD CLASS="quote">Raul, you'll be fine. my R passed no problem with the secondary o2 foil wrapped
</TD></TR></TABLE>
For real!!!!!!!!!! ... I guess I just need to put more foil wrapped because the CEL came back out
Thanks Opie for the advice
</TD></TR></TABLE>For real!!!!!!!!!! ... I guess I just need to put more foil wrapped because the CEL came back out
Thanks Opie for the advice
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