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| 3 wire o2 sensor (Page 1/3) |
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pontiacfierokid1985
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AUG 18, 11:45 PM
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2.8 4 speed car im replacing the o2 sensor in my fiero and noticed that the one i have has 3 wires on the connector instead of 1 solid wire. Have any of you guys and gals seen this before? I have the old on out and want to get a new one in the car asap
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fierofinder
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AUG 19, 12:14 AM
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Someone wired in heated o2. Two extra wires are + & - to heat it.
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Patrick
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AUG 19, 12:29 AM
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| quote | Originally posted by pontiacfierokid1985:
the one i have has 3 wires on the connector instead of 1 solid wire.
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So the connector on your harness has been modified? It has three wires as well?
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pontiacfierokid1985
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AUG 19, 10:07 PM
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Ahhh ok so what o2 sensor do i get then lol since it looks like it never been changed before. There arent any numbers on it to go off a reference is there a way that i could put a stock replacement one back in.
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Patrick
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AUG 19, 11:22 PM
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| quote | Originally posted by pontiacfierokid1985:
is there a way that i could put a stock replacement one back in.
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If you would answer my questions, we might be able to tell you.
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pontiacfierokid1985
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AUG 19, 11:41 PM
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Yes patrick it has 3 wires on it 2 white wires one black
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claude dalpe
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AUG 19, 11:47 PM
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I agree with you Patrick he is asking for help. You ask him some information and he do not answer and ask other things [This message has been edited by claude dalpe (edited 08-19-2019).]
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Patrick
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AUG 19, 11:58 PM
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| quote | Originally posted by claude dalpe:
You ask him some information and he do not answer and ask other things
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Yes, it's difficult to help when relevant questions appear to be ignored. 
| quote | Originally posted by pontiacfierokid1985:
Yes patrick it has 3 wires on it 2 white wires one black
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If you're describing the connector on the wiring harness, then no, you won't be able to install the original style single wire O2 sensor... not without modifying the harness connector back to the way it came from the factory.[This message has been edited by Patrick (edited 08-20-2019).]
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Blacktree
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AUG 20, 12:53 PM
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A quick search for "GM 3 wire O2 sensor" turned up this: https://www.amazon.com/ACDe...Heated/dp/B000C9VTRC
Now you have a part number. Any auto parts store should be able to look it up.
On a side note: The heated O2 sensor is better than the stock 1-wire sensor, because it warms up faster. So the ECM can get into closed-loop mode faster. Also, it won't cool off and kick the ECM back into open-loop mode while you're sitting at a stoplight.
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pontiacfierokid1985
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AUG 20, 02:39 PM
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Thanks for that info glad you was able to help me out find it for me it definitely has a tps connector on the harness so this must be the correct one
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