What should 02 voltage read in idle

[MCH86GN]

I have a 6.0 TT chip, this chip has open loop idle. Once my vehicle has warmed up, what should the NBO2 voltage be? I have heard that if it is open loop idle then it should be around .750? However, my O2 voltages ranges from .100mv to .650mv following the cross counts.

I have asked different people and gotten different answers, some say it should be at .750mv during open loop idle and others say it could follow the pattern of .100mv to .650mv with the cross counts.

I will get some data files.

 

[buickGN3:16]

i would email eric marshall at tt, he would know the correct answers so theres no guessing!

 

[MCH86GN]

i would email eric marshall at tt, he would know the correct answers so theres no guessing!

I posted a message on the TT forum. I guess the best idea is to send him PM directly.

 

[87-WE2]

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[MCH86GN]

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Well with the 6.0 TT, the idle is open loop and the NBO2 voltage should read around 750mv at idle. However, is going from 100mv to 600mv as the x counts increment. Something is definitely wrong with my beast. Just trying to get it all figured out. I'm in process of rebuilding a short block with all forged internals. I need everything in order before I drop an expensive rebuild in.

 

[dpasadena]

Well with the 6.0 TT, the idle is open loop and the NBO2 voltage should read around 750mv at idle. However, is going from 100mv to 600mv as the x counts increment. Something is definitely wrong with my beast. Just trying to get it all figured out. I'm in process of rebuilding a short block with all forged internals. I need everything in order before I drop an expensive rebuild in.

What does the wideband read at idle? I have the same chip and my wideband reads +- 13.0-1 at a hot idle. The o2's are 750-770. My cc's do not move at idle

 

[MCH86GN]

What does the wideband read at idle? I have the same chip and my wideband reads +- 13.0-1 at a hot idle. The o2's are 750-770. My cc's do not move at idle

My wideband reads something higher, in the 14 - 15s'. My problem is that car is behaving as though it not idling. During cold idle the NBO2 stays at around .450 or so, but as soon as the engine warms up it starts following the cross counts. What would cause it to do that, unless the 6.0 chip is programmed with the wrong calibration. I'm not sure if the 5.7 and 6.0 chip are identical hardware. Got to get this figured out soon.

 

[RunninShine231]

14.7 is good at a warm idle per wideband indicates completed combustion of mixture as to your question. open loop ecm ignores NBO2 in closed loop ecm "looks" at NBO2. cold start ecm should be adding fuel to shorten warm up time. uinless that strategy is removed im not sure havent gotten that far along yet? @ warm idle NBO2 should be fluctuationg between 450-700. if your having idlling issues have yoBadu looked into ignition, air delivery. my experiences are based on cars with nowhere near the Bad Ass stuff you have tho. hope this helps. ohh cant stress vacuum leaks.

 

[TurboDave]

My wideband reads something higher, in the 14 - 15s'. My problem is that car is behaving as though it not idling. During cold idle the NBO2 stays at around .450 or so, but as soon as the engine warms up it starts following the cross counts. What would cause it to do that, unless the 6.0 chip is programmed with the wrong software. I'm not sure if the 5.7 and 6.0 chip are identical hardware. Got to get this figured out soon.

What's your tps reading at idle??

 

[MCH86GN]

What's your tps reading at idle??

per the SM at idle it is .42.
I sent a Eric a message and he said that with the chip I have, 6.0, it should have open loop idle and the NBO2 should read 750mv. My cold idle is about 450mv and once the car is "warm" the NBO2 cycles with the cross counts, which per Eric it shouldn't. I am confused. I pulled my ECM and tried to check the chip version which is usually written on the chip, but it just had TT. I don't know if Eric has to the ability to upload the image burned to my chip and compare it to confirm it was burned with the correct version. If that makes sense. I may send my chip back and have him double check. I am going to talk to Eric on Monday, I am going to call him directly.