 o2 sensor? |
 Oct 30, 2007 - 6:03 PM
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Enthusiast  Joined Dec 24, '06 From jonesville Currently Offline Reputation: 4 (100%)  |
ok....i bought a header for my new 5sfe and was wonderin if it would make a noticeable diff. to remove the lower o2 and plug it....how would it make my car run?
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Replies
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Oct 31, 2007 - 9:08 PM
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 Enthusiast Joined Mar 27, '04 Currently Offline Reputation: 14 (100%) |
I have to leave mine unplugged.. its suppose to read after a cat and since its not, it would throw a check engine light.
-------------------- ~Daniel~ No Longer Celica Owner.. moved on to a 03 WRX-EJ207
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Oct 31, 2007 - 10:45 PM
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 Enthusiast Joined Jun 5, '07 From Santa Maria Currently Offline Reputation: 1 (100%) |
I was under the impression that if you did leave it unplugged it would cause the CEL? I left mine plugged in without any CEL.
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Nov 1, 2007 - 9:46 PM
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Enthusiast Joined Mar 27, '04 Currently Offline Reputation: 14 (100%) |
when I installed my header, first I had the top one in and the bottom plugged.. no CEL.. then figured the engine was running rich etc.. so got a 2nd O2 to put in second plug.. as soon as I did, 10 mins of driving CEL comes on.. so I unplug it and plug it shut.. no CEL..
my guess is that the second O2 sensor is reading like: signal = problem.. no signal = fine.. so i've run without 2nd O2 for about 5 months with no CEL... -------------------- ~Daniel~ No Longer Celica Owner.. moved on to a 03 WRX-EJ207
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