OXYGEN SENSOR HELP NEEDED

lf-tp2511Member

In a nut shell, are all three wire narrow-band oxygen sensors basically the same from an electrical signal basis?

I have a Halmeter AF/30 air-fuel meter on 2511. It is using the supplied Bosch 3-wire narrow band sensor. Common ground for heater and Lambda signal.

I also have, in a box, a first-generation ANALOG Holley Projection 4 TBI fuel injection unit. Came with 2511 and I'm moving towards installing it next winter.

This can be upgraded with a 3-wire, Holley narrow-band-based O2 kit to provide better closed-loop AF monitoring in low/mid ranges.

There is one of these upgrade kits on eBay, but it is minus the O2 sensor.

Should the Halmeter 3-wire sensor work for the Holley kit?

Larry

3/29/095:46 PM

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roverltdMember

You should ring the Holley tech support people. I have found them helpful on my EFI system when issues or questions arose.

They would know specifically what works with the system. I do believe there are some delta's between different makes of O2 sensors. This could be incompatable with the ECU.

3/29/096:23 PM

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comp2Member

I would go with that advise. They are not all as standard as they may seem and it would be good to get the word from Holley it is a viable sensor.

3/29/097:12 PM

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panteraturboMember

All narrowband sensors I know of read stoichometric at .5 volts which is the only thing thats important for closed loop operation of ecu's. The voltages before and after stoich may vary slightly but the ECU is looking for the switchpoint at stoich. The sensor should work fine. That being said, if you have the resources to get one I would reccomend a unit like the innovate LC-1. It is a programmable wideband controller which will output one channel with a simulated narrowband output but will give you a full wideband out put for a guage as well. Much better for tuning. They can be had for about $200.

Blaine

3/30/099:47 AM

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