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System too rich
Posted: Tue Nov 10, 2020 12:10 pm
by Undefined4door
So I've been getting a system too rich check engine light, and verified short term fuel trims are -22. I tried leaning out the air fuel wheres trims are -5 but my widebands telling me its 16:1 air fuel which is way to lean. Anythoughts? Closed loop is set to stock sensor reading and open loop is set to wideband on d12.
Re: System too rich
Posted: Tue Nov 10, 2020 12:22 pm
by Spunkster
You cannot run closed loop from an after market wideband.
What Wideband are you using?
Re: System too rich
Posted: Tue Nov 10, 2020 9:53 pm
by Undefined4door
Its a plx unit I have the stock o2 sensor for closed loop purposes. I was just referencing what my wideband reads to how much fuel the ecus pulling.
Re: System too rich
Posted: Wed Nov 11, 2020 10:21 am
by Spunkster
The stock sensor is a wideband. I would only use that and see what it reads. If it is too rich then it is probably a tuning issue.