[Gmecm] Re: Fuel Economy

Fri Sep 23 20:12:29 UTC 2005

It has been my understanding titiania type sensors were strictly a 
"resistive" element  in an O2 circuit with an 5V reference with an internal 
dropping resistance. They affect the voltage in much the same way as an ECT 
or other temperature sensor, responding to O2 content in the exhaust. Since 
they don't use zirconium plates to manipulate ions thus shifting the 450mV 
reference voltage O2 above and below that level, I can't see how adding a 
resistor to the circuit is going to affect a Buick ECM/PCM as it most 
certainly puts out only 450mV. Please "clarify"
Thanks
WOT

----- Original Message ----- 
From: "Tom Prucha" <tprucha at wideopenwest.com>
To: <gmecm at diy-efi.org>
Sent: Thursday, September 22, 2005 7:13 PM
Subject: Re: [Gmecm] Re: Fuel Economy

> I've been running TiO2 sensors for years on my Buick by using a resistor 
> between the signal output and ground to get a nice 0 to 1V resultant 
> signal.  I don't know if the the new ones will still do that or not.  TiO2 
> is also nearly immune to lead fouling compared to Zirconia.
>
> Tom
>
> Aaron McBride wrote:
>
>>An O2 sensor that reads0-5 volts is a Titainia type O2 sensor, It sends 
>>the
>>PCM a signal based on resistance instead of 0-1 volt like a Zirconium O2
>>Sensor. 5 volt reference, 3.5-4.5 = rich, .5-1.5 = lean. Not compatible 
>>with
>>the older style O2 sensors, Alot of late model Diamler/Chrysler vehicles
>>have gone to this style. Aaron
>>----- Original Message ----- 
>>From: "Darrell" <ndarrell at telusplanet.net>
>>To: <gmecm at diy-efi.org>
>>Sent: Wednesday, September 21, 2005 11:48 PM
>>Subject: Re: [Gmecm] Re: Fuel Economy
>>
>>
>>
>>>Mark:
>>>
>>>I took a look at their website, looks interesting and relatively
>>>cheep.  One thing i noticed, though, is that their nb output voltage
>>>didn't look compatible with a standard O2, and it was 0-5 instead of
>>>0-1v.  What up with dat?
>>>
>>>On 20 Sep 2005 at 21:12, Mark Romans wrote:
>>>
>>>
>>>>Why re-create the wheel.
>>>>
>>>>
>>http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=4576708442&sspagename=STRK%3AMEWA%3AIT
>>
>>>>When it's already been done and works really well!
>>>>
>>>>It datalogs your wideband and simulates your narrow band to the ecm.
>>>>
>>>>http://www.zeitronix.com/
>>>>
>>>>Mark
>>>>
>>>>----- Original Message ----- 
>>>>From: "Darrell" <ndarrell at telusplanet.net>
>>>>To: <gmecm at diy-efi.org>
>>>>Sent: Tuesday, September 20, 2005 9:08 PM
>>>>Subject: Re: [Gmecm] Re: Fuel Economy
>>>>
>>>>
>>>>
>>>>>No, not necessarily.  I knew the signal range was different, adapting
>>>>>the output to a different range would be cake (i'm an electronics
>>>>>tech).  I shoulda been a bit clearer, but it seems you guys always
>>>>>take the worst possible interpretation. =D
>>>>>I like the idea someone else posted about adapting the signal to the
>>>>>nb, and getting wideband data at the same time...  with a little
>>>>>tweaker to run the crossover point up and down, you could pretty much
>>>>>set the "stoich" point wherever you want, no programming.  Might be
>>>>>worth a look.  Time to start lurking on the WBO2 list...
>>>>>
>>>>>On 17 Sep 2005 at 15:20, gary wrote:
>>>>>
>>>>>
>>>>>>I incorrectly interpreted your reply to mean by any way possible.
>>>>>>You obviously implied the use of a WB as a replacement without
>>>>>>any additional hardware/software to assist the PCM/ECM.
>>>>>>
>>>>>>GAS
>>>>>>
>>>>>>----- Original Message ----- 
>>>>>>From: "Mark Romans" <romans at starstream.net>
>>>>>>To: <gmecm at diy-efi.org>
>>>>>>Sent: Saturday, September 17, 2005 11:09 AM
>>>>>>Subject: Re: [Gmecm] Re: Fuel Economy
>>>>>>
>>>>>>
>>>>>>
>>>>>>>Hi Darrell:  I stick with my statement as to your specific
>>>>>>>
>>question.
>>
>>>>>>>Obviously if you add an interface box you can use a wb output into
>>>>>>>a narrow band input.  I have a Zeitronix Wide band and it allows me
>>>>>>>to input a SIMULATED narrow band signal into the stock ecm while
>>>>>>>using the WB to datalog actual afrs.
>>>>>>>
>>>>>>>SOME people don't realize that word semantics are critical when you
>>>>>>>are typing.  "Clarification" would have been a better word sincce I
>>>>>>>wasn't technically wrong in the first place.
>>>>>>>
>>>>>>>----- Original Message ----- 
>>>>>>>From: "Mark Romans" <romans at starstream.net>
>>>>>>>To: <gmecm at diy-efi.org>
>>>>>>>Sent: Friday, September 16, 2005 4:28 PM
>>>>>>>Subject: Re: [Gmecm] Re: Fuel Economy
>>>>>>>
>>>>>>>
>>>>>>>>No No No!   You can't run a wide band in place of a narrow band.
>>>>>>>>The Wide band puts out a somewhat linear 0-5 v output.
>>>>>>>>The narrow band puts out a non-linear 0-1 v output.
>>>>>>>>
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>>>>>>
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>>>>>
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>>
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