[Diy_efi] One wire o2 sensor to four wire sensor

[Carter Shore]

C'mon folks,
characterizing commercial O2 sensors solely by the
number of leads is like trying to do the same with
IC's. (8 pins? gotta be an op-amp, right?)

What actually matters is what's inside. The number of
leads will usually be due to some combination of the
following:

They are either narrow-band or wide-band.
They are either heated, or not.
They have seperate ground wire, or are case grounded.
They have built in calibration/sensor elements or not.

etc., etc.

Carter

--- Ben Heidorn <b_the_j at hotmail.com> wrote:

> 2 and 4 wire sensors are resistors that modify
> signals sent from the ecm, 1 
> and 3 wire sensors are galvanic batteries that
> produce thier own signal. 3 
> and 4 wire sensors are equiped with heaters. you
> probably wont find the need 
> for a heated o2 unless you are going to run headers
> with the sensor mounted 
> down on the collector. Do a search for posts in the
> electrical forum of TGO 
> by b_the_j and you'll see how i ran mine.
> 
> 



       
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