Why Long Term Fuel Trims Remains in Negative?
Motor Vehicle Maintenance & Repair Asked on February 16, 2021
Dear Experts here im attaching log of 1SZ-FE, 1.0L engine for your kind consideration, please advice why my LTFT remains in -ive though MAF, Intake Air Temp sensor, ECT sensor and O2 sensor is working fine, also i had a compression test which is 170psi for each cylinder.
Request for your valuable comments and suggestions please.
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