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Subject: "stopped getting A/F reading?" This topic is locked.
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bnissonDec-23-10 11:37 PM
Member since Mar 31st 2010
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#132779, "stopped getting A/F reading?"


          

My apexi turbo timer stopped giving me an A/F reading yesterday. It still sends the o2 voltage but i want to see the theoretical A/F. any ideas as to why it might have stopped sending it to the timer?

  
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AdministratorCODE4Dec-24-10 06:45 AM
Member since Nov 23rd 2003
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#132784, "RE: stopped getting A/F reading?"
In response to Reply # 0



          

Bad wire connection? Faulty Unit?

---

2012 2500HD LML

  
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bnissonDec-24-10 07:02 AM
Member since Mar 31st 2010
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#132786, "RE: stopped getting A/F reading?"
In response to Reply # 1

          

Originally posted by CODE4
Bad wire connection? Faulty Unit?


I was thinking that, but the o2 voltage shows on the timer, as well as battery voltage.

  
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AdministratorCODE4Dec-24-10 07:04 AM
Member since Nov 23rd 2003
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#132787, "RE: stopped getting A/F reading?"
In response to Reply # 2



          

Originally posted by bnisson
Originally posted by CODE4 Bad wire connection? Faulty Unit?
I was thinking that, but the o2 voltage shows on the timer, as well as battery voltage.


Well if the O2 voltage signal is accurate, but A/F reading then there is your answer.

---

2012 2500HD LML

  
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bnissonDec-24-10 07:36 AM
Member since Mar 31st 2010
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#132795, "RE: stopped getting A/F reading?"
In response to Reply # 3

          

Originally posted by CODE4
Originally posted by bnisson
Originally posted by CODE4 Bad wire connection? Faulty Unit?
I was thinking that, but the o2 voltage shows on the timer, as well as battery voltage.
Well if the O2 voltage signal is accurate, but A/F reading then there is your answer.




...i'm confused.

  
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AdministratorCODE4Dec-24-10 07:38 AM
Member since Nov 23rd 2003
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#132796, "RE: stopped getting A/F reading?"
In response to Reply # 4



          

You have a lot of learning to do with this car bro.

O2 voltage is directly drives the A/F ratio. Typical WBO2 sensors read 2.5 volts as stoich, 14.7:1. So corresponding voltages relate to air/fuel ratios. There is not two separate wires from a sensor for a dedicated O2 voltage, and A/F signal.

So if your turbo timer reads one but not the other, it is likely to be an internal problem.

Contact the unit's manufacturer for more information about it look online for a manual or FAQ.

---

2012 2500HD LML

  
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