GGMan Posted January 16, 2022 Share Posted January 16, 2022 Please watch vidoe of trim here: My long term fuel trim at idle hovers at about -10.9% on average and it goes down when I am driving only - it does not change when I press throttle in neutral - it does not chnage when coasting in neutral - it only changes when I am in motion and press throttle. I watched few videos saying the O2 sensor should switch on/off but mine seems to appear to stay at 0.8v majority the time. Any tips on this issue or is this normal for a Subaru? Or what other sensors should I be looking at? Thanks Quote Link to comment Share on other sites More sharing options...
Guest Posted January 24, 2022 Share Posted January 24, 2022 mechanic.com.au All you need to know about "Long Term and Short Term fuel trim". Quote Link to comment Share on other sites More sharing options...
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