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#1 Posted : Wednesday, 4 August 2004 8:43:16 PM(UTC)
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Hi all, what are the advantages/disadvantages for the 2 types of O2 sensor? ie which ones better, the 4 wire or the single wire.


Anyone know why Holden changed over?


Cheers Dre

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#2 Posted : Thursday, 5 August 2004 12:09:04 AM(UTC)
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Hi Dre,


i believe the single wire ones are heated by exhaust gas, and the multiple wires are self heating.. heating up quicker will give u more accurate readings sooner after start up Im assuming.


Cheers


Ed

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#3 Posted : Thursday, 5 August 2004 1:51:11 AM(UTC)
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Ahhhh, excellent, thought there must be a reason why they changed.


Ok, next question, can a computer for a 1 wire control a 4 wire O2 sensor? is it just a change in wiring or more than that?


Thanks for the info!


Cheers Dre

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#4 Posted : Thursday, 5 August 2004 5:04:37 AM(UTC)
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Hi Dre.


The 4 common types of 02 sensor are 1,2,4 & 4 wire.


They fall into 2 main types heated & un-heated. The 1 & 2 wire are un-heated & the 3 & 4 wire are heated. The 2 wire is the same as a 1 wire but with a seperate si

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#5 Posted : Thursday, 5 August 2004 5:07:10 AM(UTC)
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Hi Dre.


The 4 common types of 02 sensor are 1,2,4 & 4 wire.


They fall into 2 main types heated & un-heated. The 1 & 2 wire are un-heated & the 3 & 4 wire are heated. The 2 wire is the same as a 1 wire but with a seperate si

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#6 Posted : Monday, 9 August 2004 11:00:23 PM(UTC)
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Thanks for the info. I cant actually leave it as it is as I'm talking about the 308 in my kingswood (which I am in the process of putting an EFI manifold in place of the quad etc).


I have the bung in my extractors for an O2 sensor, so I'll just u

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