[Diy_efi] One wire o2 sensor to four wire sensor

[Steven P. Donegan]

Well - given you are trying to 'retrofit' a system to an original
non-efi vehicle I would suggest you start with using the entire original
set of sensors the ECU is accustomed to. After you have a functional
system you can fill the list in on exactly what you're trying to
accomplish and any/all of us will do our best to help.

On Sat, 2007-06-02 at 16:07 -0700, Mike Hudson wrote:
> ----- Original Message ----- 
> From: "Steven P. Donegan" <steve at donegan.org>
> To: <diy_efi at diy-efi.org>
> Sent: Saturday, June 02, 2007 3:28 PM
> Subject: Re: [Diy_efi] One wire o2 sensor to four wire sensor
> 
> 
> > Your ECU won't understand a wideband O2 sensor - my suggestion would be
> > to just mount a ground lug between the O2 sensor and the bung hole and
> > make it a 2 wire sensor. Simple, cheap, and should eliminate any fun
> > re-engineering...
> 
> I believe the AC Delco AFS-75 or NTK 21006 is a four wire narrow band 
> sensor.
> 
> I don't know if the voltage at the same AFR is much different than the 
> original single wire and a four wire?
> /diy_efi 
> 
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