EngineDIYCommunity Starter

2023 Genesis G70 — fuel trims are positive at idle and improve with RPM — anyone dealt with this recently?

WeekendEnthusiast189Community StarterMar 10, 20262023 Genesis G70 3.3TLas Vegas
Long-term fuel trims are much more positive at idle than at 2,500 RPM. No obvious misfire. Does that pattern still make an intake/vacuum leak the first place to look?
permalink

1 replies

ProjectTraveler413Community StarterCommunity StarterMar 11, 2026permalink
Intermittent stuff lies if you only catch it once. Write temp, speed, and in-gear vs coast when the 2023 Genesis G70 does it — then decide on parts. If the cheap test changes it, stop and reassess. On “fuel trims are positive at idle and,” that was the fork that mattered for me. Run the total, not the monthly, before you commit. Climate here is different, so treat that as a local data point. I'd rather look cautious in this thread than stuck later.
Sign in to reply

Similar discussions