this is the deal... right now on my 1.5 VX, i have a homemade fabed T25 at 6 PSI on the FMU. i got a VAFC in right now, just waiting on some injectors.

in efforts to half way tune it.. lol i want to use the 5 wire WB O2 that is in my car now, torwards a WB controller? how would this be possible? just get a WB controller, and piggy back off my O2 in the car now?

 

no wide band heads out there huh?

 

https://honda-tech.com/zerothread?id=635792

The old techedge used the NTK L1h1 sensor you're talking about.

I don't think you're going to be able to satisfy the ECUs requirements to have heater controller feedback, and the same requirement for the wideband controller.

Maybe find a gauge that reads the 0-5v signal, and just display it by tapping into the O2s signal wire.

-PHiZ

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHiZ &raquo;</TD></TR><TR><TD CLASS="quote">
Maybe find a gauge that reads the 0-5v signal, and just display it by tapping into the O2s signal wire.

-PHiZ</TD></TR></TABLE>

what do A/F meters read.. 0 - 3V? i wonder where i could find a 5 V gauge?

 

hey phiz..

so if i were to set up a dig. readout of my O2 signal.. how would i go about that?

 

How the Honda 5-wire wideband O2 sensor works.

Hopefully that link works, if not, I'll e-mail it to ya'.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">How the Honda 5-wire wideband O2 sensor works.

Hopefully that link works, if not, I'll e-mail it to ya'.</TD></TR></TABLE>

nah man.. it didn't work..

i'll PM you the email.

 

Well shitty, it doesn't work....I don't have a space to host this particular file...I thought the Yahoo Briefcase deally would work for me. Imagestation and the like only accept jpegs.

If there are any other interested parties, please PM me with an e-mail addy and I'll send it out to you.

 

18.7 How do you test them?

Luckily, this complicated sensor is relatively easy to test. It consists mainly of three voltage tests, the reference voltage, the cell voltage and the pump cell voltage. The reference voltage should be 2.7 volts. The cell voltage should be a constant .45 volts. The pump cell voltage is the equivalent of an O2 sensor input voltage. It is the voltage that changes with the air/fuel ratio however it works opposite of a standard 02 sensor (rich = low, lean = high)


chris.. you think if i probed pump cell wire.. if i could get a read with a fluke?

 

Without having actually tested one, my answer has to assume that which is given in the document:

In summary, the ECM/PCM monitors the voltage
needed by the pump cell control to maintain the .45
volts on sensor 1. This voltage is used by the ECM
to calculate the A/F ration of the exhaust gases. Using
this technique the sensor can be used to monitor
ratios between 12:1 and 22:1. As you will see in testing,
the pump cell control wire produces a voltage
that is proportional to the air / fuel ratio.

 

huh? lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Built B16A &raquo;</TD></TR><TR><TD CLASS="quote">chris.. you think if i probed pump cell wire.. if i could get a read with a fluke?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">"As you will see in testing,
the pump cell control wire produces a voltage
that is proportional to the air / fuel ratio."</TD></TR></TABLE>

Yes.

Now, what voltage corresponds to what a/f ratio is way beyond me bro.

 

yeah.. they said something like its backwards.. so.. 1-2.5 would be rich,a nd 2.5-5 would be lean?

http://www.diy-wb.com/v_out.htm does that sorta make sence?

 

No dice.

In the illustration where they have the two voltmeters hooked up - realize that the (-) voltmeter lead isn't on a ground per se....like the negative battery terminal ground - not the same thing.

So basically, hooking up the Fluke in the configuration that they have illustrated will get you a voltage that is proportional to the a/f ratio. This voltage will actually go negative as described in the "rich scenario condition"....so that right there voids the table you have linked.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">This voltage will actually go negative as described in the "rich scenario condition"....so that right there voids the table you have linked.</TD></TR></TABLE>

that table i foudn on a DIY WIDEBAND site.. so.. maybe the O2 from honda... on a honda ECU reads different thatn that standalone WB controller?

 

bump for idea's on how i can read my WB O2...

 

IMO, the only way I see this happening is if you can find a table of a/f's that correspond to the Pump Cell voltage, with respect to the Reference.

Or, find someone with an OBD2 scanner capable of displaying an actual a/f ratio and then measure the above voltage and make your own table. But at that point you're messing with the Hx and not the Vx model....so who knows if the two tables would be similar enough to be valid.

If ya' got someone around, borrow their WB O2/controller box, measure the voltage of your stock O2 and make your table that way.

I have a feeling if things were this easy, someone would have already done it - but who knows for sure, right.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EE_Chris &raquo;</TD></TR><TR><TD CLASS="quote">I have a feeling if things were this easy, someone would have already done it - but who knows for sure, right.</TD></TR></TABLE>

very true my firend, but im thinking that person hasn't read this thread yet.

other than phiz.. im wondering who's made a DIY wideband meter with a OEM honda sensor? thats basicly what i want.. but just piggy back it while its communitcating with the ECU too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Built B16A &raquo;</TD></TR><TR><TD CLASS="quote">

very true my firend, but im thinking that person hasn't read this thread yet.

other than phiz.. im wondering who's made a DIY wideband meter with a OEM honda sensor? thats basicly what i want.. but just piggy back it while its communitcating with the ECU too.</TD></TR></TABLE>

Sorry, but you don't have the understanding/background to do a DIY project. Besides that sensor is probably horribly inaccurate as it's got several thousand miles on it.

-PHiZ