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b16a2 Sensor help 2000 si in EK DX

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Old 11-22-2006, 08:16 PM
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Default b16a2 Sensor help 2000 si in EK DX

I have a 97 civic dx with a b16a2 (2000 si) and im throwing a cel code for a o2 sensor my stock harness has 2 plugs one for the down pipe and the other i dont know. where does the secound o2 sensor suppost to go? I have been getting different ideas with no luck to searching.

O2 sensor
1. header
2. before cat?

02 sensor
1. before cat
2. after cat

PLEASE HELP
Old 11-22-2006, 08:19 PM
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Default Re: b16a2 Sensor help 2000 si in EK DX (yeah_its_fast)

Edit:

One on downpipe, one on the cat.




Bottom exhaust is supposed to be the Si/Ex exhaust.
Old 11-22-2006, 08:22 PM
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ok so then i need a new headers because the headers on there irght now do not have a hole for a o2 sensor
Old 11-22-2006, 08:24 PM
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Default Re: (yeah_its_fast)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by yeah_its_fast &raquo;</TD></TR><TR><TD CLASS="quote">ok so then i need a new headers because the headers on there irght now do not have a hole for a o2 sensor
</TD></TR></TABLE>

I got ahead of myself and answered to quickly, please re-read my post.
Old 11-22-2006, 08:26 PM
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ok thank you im studing it really hard to see where those are suppost to go
Old 11-22-2006, 10:47 PM
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There is no O2 senor on the header of a b16a2 i believe. I think it's before the cat and after the cat. Someone correct me if I'm wrong.
Old 11-23-2006, 06:15 AM
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Default Re: (ondahush)

there should be one in the manifold(downpipe) and one in the cat. not after the cat , in it. and if your under the car looking up , you might even miss it , cause its goes top down into the cat.
Old 11-23-2006, 10:38 AM
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ok thank you. yeah my cat is another problem I dont have a cat on the car. so im trying to be inviroment friendly and put a cat back on but wasnt sure about the o2 and i didnt know that the si or ex cat has the hole on the cat which fixed all this. Thanks again and Happy Turkeyday
Old 11-23-2006, 12:43 PM
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Default Re: (ondahush)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ondahush &raquo;</TD></TR><TR><TD CLASS="quote">There is no O2 senor on the header of a b16a2 i believe. I think it's before the cat and after the cat. Someone correct me if I'm wrong.</TD></TR></TABLE>

Just look at the bottom pic of the diagram posted.
Old 11-23-2006, 03:29 PM
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Default Re: (cranny)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cranny &raquo;</TD></TR><TR><TD CLASS="quote">there should be one in the manifold(downpipe) and one in the cat. not after the cat , in it. and if your under the car looking up , you might even miss it , cause its goes top down into the cat.</TD></TR></TABLE>

I think this one is correct there is one on the down pipe, and one ontop of the cat.
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