EngineDiagnostic helpCommunity Starter

2021 Mazda CX-5 — fuel trims are positive at idle and improve with RPM

SleeperTraveler221Community StarterAug 27, 20262021 Mazda CX-5 TurboHouston
2021 Mazda CX-5 Turbo, about 92,000 miles. 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

0 replies

Sign in to reply

Similar discussions