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Old 02-12-2008, 10:15 PM   #1
JLW2007RS
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Default o2 sensor wiring question

Can splice two o2 sensor wires into one o2 sensor. so basically can i eliminate one o2 sensor and wire both to the other?
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Old 02-12-2008, 11:06 PM   #2
GrundleJuice
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No. thats the simple, concise answer. If you want an explanation, do some research on what O2 sensors are used for in the first place (and what cat's are for) and i think you might answer your own question and actually learn something in the process. a search here will probably give you tons of info and a wiki search will also give you a bunch of info. google search would work, too, im sure. good luck.
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Old 02-13-2008, 02:56 PM   #3
LTracer
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Do some homework first: http://en.wikipedia.org/wiki/Oxygen_sensor

"They determine if the air fuel ratio exiting a gas-combustion engine is rich (with unburnt fuel vapor) or lean (with excess oxygen). Closed-loop feedback-controlled fuel injection varies the fuel injector output according to real-time sensor data rather than operating with a predetermined (open-loop) fuel map."

Not a good idea. Upstream O2 monitors exhaust gases and adjusts fuel trims, it also serves as a benchmark for the downstream O2 which monitors for emissions and also makes minor modifications to the fuel trims. If you combine the two you elminate that benchmark and will throw a CEL. More importantly both O2 sensors exist to check on each other, if the upstream sensor fails the downstream takes over as the primary monitor of exhaust gases. Bottom line: don't do it.

Question, why would you?
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Old 02-13-2008, 04:04 PM   #4
JLW2007RS
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to get around driling another o2 sensor bung somewhere after my second cat if i put headers in
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Old 02-13-2008, 05:12 PM   #5
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I just had a O2 sensor bung rewelded on my stainless Stromung track pipe (came with a manufactured extender that needed to be removed) by a local machine shop. Cost $40 and was well worth the headache of trying to deal with the P2096 CEL. I'd advise against trying to have it done at a chain exhaust shop, I got the "you know this is $10,000 fine blah blah blah" and proceded to walk out with track pipe in hand. Find a good machine/fabrication shop and take the individual piece to them.
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Old 06-27-2008, 10:00 PM   #6
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Quote:
Originally Posted by LTracer View Post
I just had a O2 sensor bung rewelded on my stainless Stromung track pipe (came with a manufactured extender that needed to be removed) by a local machine shop. Cost $40 and was well worth the headache of trying to deal with the P2096 CEL. I'd advise against trying to have it done at a chain exhaust shop, I got the "you know this is $10,000 fine blah blah blah" and proceded to walk out with track pipe in hand. Find a good machine/fabrication shop and take the individual piece to them.
What happen since then? Still have a P2096 code?
Tell me more about reWelding.
I have same code with Perrin catless DP
Thanks.
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Old 06-27-2008, 11:18 PM   #7
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No more P2096, just the P0420 (cat ineffiency). I settled with this and disabled via romraider.
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