Lambda sensors - Where, Why and how Much ?

[Len Sabatine]

At 07:53 AM 6/8/00 -0700, you wrote:
>I don't know what you call the 4th wire, but there are 2 whites, to which 
>I hooked up +12V and
>ground, the black wire goes to the ECM as the signal for the sensor, and 
>the grey wire gets hooked
>to ground, also.
>
>Squash
>
>--- "Edward J. Malkiewicz" <krazyed at worldnet.att.net> wrote:
> > Is the 4th wire for an external O2 gauge? How do you have the connector
> >     wired on the harness side?
> >
> >         Thanks,
> >             Ed
> >
> > -- One of those wires goes to the Ho2s [ Heater ] One of the ground 
> wires is redundent.

         Len


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