MAF Sensor Replacement Cost The replacement cost of a mass air flow sensor can anywhere from $80 to $380. In most cases, a faulty mass flow sensor has a specific code that will generate during computer diagnostics and is typically easy to determine with computer testing equipment.How much does it cost to replace the mass air flow sensor? If you believe your car has a faulty mass air flow sensor, take it to a schedule an appointment with one of our mechanics at Palumbo Automotive – Peter palumbo so that we can run a complete computer diagnostic. Allow the MAF sensor to dry completely before reinstalling it in the air duct. Be sure NOT to scrub the parts you may break the wire or damage the plate. It is easy to do, you will need to spray 10 to 15 spurts of the mass air flower cleaner onto the wire or plate. We recommend that you clean your MAF sensor every time you change your air filter. The engine may be stalling because it isn’t getting enough throttle opening. Even a dirty MAF sensor can cause a lean code and/or misfire to occur. This might be anything from a hard-to-find vacuum leak to dirty fuel injectors, low fuel pressure, a weak ignition coil, bad plug wires, or compression problems. Hesitation and jerking during acceleration.The engine hesitates or drags while under load or idle.The engine stalls shortly after starting.The engine is very hard to start or turn over.Here are some of the most common symptoms of a faulty mass airflow sensor: Symptoms of a Faulty Mass Air Flow SensorĪ faulty mass airflow sensor will cause problems similar to low compression or low vacuum, and will also show symptoms similar to when your vehicle has low fuel pressure from a faulty fuel pump. When a vehicle’s mass airflow sensor is faulty or defective it can cause a variety of problems, and usually results in very poor performance from your engine. The air mass information is necessary for the ECU to correctly balance and deliver the correct amount of fuel to the engine. A mass airflow sensor (MAS) determines the mass of air entering a vehicle’s fuel injection engine, and passes that data to the Engine Control Unit, or ECU.
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