If the mass air flow sensor is severely damaged, the driver should perform the replacement steps in the sequence below: Step 1: Open the hood and turn off your car’s ignition. Step 2: The negative cable (red) should be disconnected to avoid danger during implementation. Locate the MAF sensor on the intake. It is commonly found in the air

The BMW E46 digital engine management (DME) systems use a hot-film mass airflow sensor, installed between the air filter housing and the intake manifold, to monitor air flow into the engine intake. Inside the sensor, there is a thin metal film, which is maintained at a constant temperature via electrical current from the ECM.

The mass airflow sensor (commonly abbreviated to MAF) is one of the most important engine management sensors. A bad mass airflow sensor can leave your Jeep Cherokee's engine running rough, or even inoperable. A MAF sensor measures the density of the air entering the intake manifold. It passes this information onto your Cherokee's ECU.

The most common signs of bad mass air flow sensor (MAF) in Toyota Land Cruiser are loss of power or slow acceleration, engine hesitation or jerking during acceleration, erratic idling, misfires, poor exhaust emission values and sometimes black smoke comes out of the tailpipe. The mass air flow sensor is part of the engine’s intake system and 2351 posts · Joined 2009. #1 · Sep 1, 2020. I was hoping someone out they may have had the same issue & can give me a testing process for the MAFS. I started getting the dreaded codes P0171 & P0174 Lean mixture banks 1 & 2 on my '05 E46 330ic with 93k miles. Here's the long story: My starter was going bad, so I replaced it with a new Bosch zCeAy.

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e46 mass air flow sensor symptoms