catback Posted December 17, 2015 Report Share Posted December 17, 2015 Is there a way to determine the A/F ratio based on the voltage reported by the front O2 sensor in dice? Link to comment Share on other sites More sharing options...
Fran9690 Posted December 18, 2015 Report Share Posted December 18, 2015 What exactly is it that you are trying to do by finding the AFR? Link to comment Share on other sites More sharing options...
TryingBe Posted December 18, 2015 Report Share Posted December 18, 2015 12 hours ago, catback said: Is there a way to determine the A/F ratio based on the voltage reported by the front O2 sensor in dice? The stock o2 sensor is narrow band o2 sensor, which means it will only give you a very limited information. Basically, it can tell you if you richer or leaner than 14.7 and that's it. It can't tell you if you're 9:1 or 13:1 rich nor 15:1 or 18:1 lean. http://cherrypicker.tripod.com/id12.html What you need is to install a wideband o2. I like AEM myself, around $160. I had issue with Innovate MTX-L. Re-calibrate didn't fix it, new sensor didn't fix it. I finally gave up and put in an AEM and issue went away for good. http://tunertools.com/articles/FordMuscle.pdf Link to comment Share on other sites More sharing options...
Domo Posted December 18, 2015 Report Share Posted December 18, 2015 actually I've just been through this with my car on a 2000 v70xc the front o2 sensor as ordered from bosch is a wideband and you can tell from vida/dice by looking at the voltage it should read 1.0 volts for 14.7afr I had 0.88 volts giving me a reading of 13.3 afr hope this helps Link to comment Share on other sites More sharing options...
andyb5 Posted December 18, 2015 Report Share Posted December 18, 2015 15 hours ago, TryingBe said: The stock o2 sensor is narrow band o2 sensor, which means it will only give you a very limited information. Basically, it can tell you if you richer or leaner than 14.7 and that's it. It can't tell you if you're 9:1 or 13:1 rich nor 15:1 or 18:1 lean. http://cherrypicker.tripod.com/id12.html What you need is to install a wideband o2. I like AEM myself, around $160. I had issue with Innovate MTX-L. Re-calibrate didn't fix it, new sensor didn't fix it. I finally gave up and put in an AEM and issue went away for good. http://tunertools.com/articles/FordMuscle.pdf That is true on pre-98 cars, but is not the case for 99+ cars. The ME7 cars use a wideband sensor from the factory. This means VIDA can display the voltage (along with MAF readings, etc) in real time so you can troubleshoot more accurately. Link to comment Share on other sites More sharing options...
TryingBe Posted December 18, 2015 Report Share Posted December 18, 2015 2 minutes ago, andyb5 said: That is true on pre-98 cars, but is not the case for 99+ cars. The ME7 cars use a wideband sensor from the factory. This means VIDA can display the voltage (along with MAF readings, etc) in real time so you can troubleshoot more accurately. Thanks, good to know. Link to comment Share on other sites More sharing options...
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