Quote:
Originally Posted by projectbarnie
STFT is -21 during WOT
At idle in D STFT is near 0 and LTFT is at +14
|
At idle try raising and hold RPM to a steady 2000 RPM for 30 seconds, does LTFT drop or stay at +14?
Assuming your AFRs are good, your WOT fuel trims are ok. +10% LTFT / -21% STFT (-11% total) during WOT is ok.
What makes you think new O2 sensors would be the next fix? Are you getting engine codes? How many miles does your car have? Maybe your injectors are just a little gunky, do you always use top tier fuel? Have you ever tried using one of those fuel system cleaners in a tank of gas like a bottle of Techron/Redline s-1/Liquimoly Jectron?