Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
In the captures I just posted you can see in the one set, I am at idle for a long time, ST trims are around 0. LTs still sit at 14.8 (LTs never budge, ever). Then on the throttle, the ST trims go up some.
I have checked every way I know of for vacuum leaks, and cant find any. checked probably 12 times. Not saying I am definitely right, but have exhausted that route as well
I understand. I wish I could help further. Was the vehicle in closed loop when tft was around 0% and ltft, 14.8% at idle? This is my last question. Since this was a still capture, and there was no loop status, I couldn't see any variations in stft, which would make me determine the total fuel trims at idle.
I will let someone else take over for further help after that.
No, it was warm in CL just idling. Wow, looking back at the captures I posted, just realizing it did not post them in order. wow. that is going to be confusing for anybody! if you hover over the image, it tells you the name of the file. I labeled them "Try 1 1" and "Try 1 2" and "Try 1 3" that means all three of those go together, they are the same point in time, but screen shot of different pids. then there is "Try 2 1" and Try 2 2" etc.
With low calculated load and maf voltage below 4v, the maf is underreporting. With 14% ltft at idle and stft 0, in close loop and with engine warm, there may be a vacuum leak that you can't find. I don't know if the 14% is normal for the vehicle or not. I really don't know what to tell you. I know you don't want to spend $200 on a sensor and I am with you. Check the sensor circuit for high resistance.
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