Mercedes-Benz 600SEL Problem Report

Mercedes-Benz 600SEL Erratic Engine Operation and Poor Fuel Economy Due to Faulty Mass Air Flow Sensor

(5 reports)

A faulty mass air flow (MAF) sensor can cause erratic/rough engine operation and fuel economy issues. Since this sensor measures the actual amount of air entering the motor, when it fails, the engine control module (ECM) takes the wrong information and delivers incorrect volumes of fuel to the cylinders.

slow runing ok press gas pedal speed cannot pik up -
running rough, black smoke exhaust, no power, 45 .mph top speed, replaced. -
mass air flow sensors allowing too rich a fuel mixture causing engine to run rough when warm. replaced mass air flow sensors. Dealer price near $1,500! -
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