Posts Tagged: Fuel System Monitor

Fuel System Monitor — I/M Fuel System Monitor

Fuel System Monitor — How it works The Fuel System Monitor is actually more of a Fuel System Correction program. The ECM is constantly monitoring how well it did in calculating fuel-to-air ratios. When it must make an adjustment from factory programming; either by adding fuel or subtracting fuel, it enters those corrections into either short term fuel corrections or long term fuel corrections. Those corrections are referred to as Fuel Trim What is Fuel Trim? Fuel Trim is a set of positive and negative adjustments to factory air/fuel programming … Read More