[Diy_efi] Need help with diy-wb, Vout = 2.48v

[Brian]

Well I built the thing that is at:

http://www.techedge.com.au/vehicle/wbo2/default.htm

which is a copy of the kit that most of you guys probably have with a
different PCB.  

In any event, anyone have any ideas why mine doesn't work?

Thanks!

Brian


Shannen at grolen.com wrote:
> 
> DThere is no such thing as the aussie version of the diy wbO2.
> Shannen
> I>Hello,
> DI>     Mine does a very similar thing... (I built the Aussie version of this
> DI>kit).  My Vout never fluctuates from about 2.55 V, but my sensor does
> DI>heat up OK it seems.  Is this a bad sensor or a bad board?  I did run my
> DI>sensor in the car for about 30 minutes when it might not have been hot
> DI>because I didn't fully understand that it needed to be warmed up with
> DI>the internal heater... could this have fried my sensor?
> 
> DI>     I have a schematic with my measured voltages at:
> 
> DI>http://www.zeroglabs.com/rx7/images/schem.notes.jpg
> 
> DI>My measured voltages are in GREEN, while the target voltages are in RED.
> 
> DI>If any electronics whizzes would be willing to spend a few minutes
> DI>looking, I'd sure be grateful!  As of now, my DIY kit is on the shelf...
> DI>:( :(
> 
> DI>Regards,
> DI>Brian
> 
> DI>alain at fbsims.com wrote:
> DI>>
> DI>> Hi all, I just finished putting together the pcb and completed all of the
> DI>> and all passed ok.
> DI>>
> DI>> When I applied power to both the heater and UEGO circuits, Vout measured
> DI>> 2.48 volts, and when the LED came on, Vout was still the same. Could my
> DI>> o2 sensor be shot??
> DI>>
> DI>> Also, the o2 sensor does get hot, so atleast the heater ciruit is working.
> DI>>
> DI>> Anyone have a clue as to what could be wrong??
> DI>>
> DI>> Thanks
> DI>> Alain
> DI>>
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