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International Automotive Technicians Network
Re: FUEL TRIM LEAN DIAGNOSIS
Posted to Technical Theory Forum on 4/4/2025

Both fuel pump pressures were well withing the OE specs, I was more hoping that knowing this vehicle was trimming at 20%, what would one expect the ms time to be at idle, 1500, 3,000 etc. For example, if a 20% correction was needed and the injectors were perfe... Login to read more.