![]() With improper air flow calculations, the fuel injectors may dump excess fuel in the cylinders which go unburned. It may be impossible to drive smoothly with the engine hesitating to produce adequate power. Erratic Idling:Įngine rpms may rise and fall without throttle input as the sensors try to find their bearings. You may have trouble starting the engine once it stops. The amount of fuel required at various driving conditions and stages will not be enough to sustain internal combustion effectively. The engine can stall while driving without accurate air flow readings from the intake. The onboard computer can identify error signals from sensors around the engine with high accuracy and report these issues to the driver with an OBD scanner. The instrument cluster will display a ‘check engine’ light when there is a problem with the mass air flow sensor. The ECU will either add more fuel or less fuel into the cylinders which may result in poor acceleration, rough idling, inability to maintain speed, overheating, difficult starting and unexpected engine stalling. Some common faults with a mass air flow sensor include: Reduced Engine Performance:Ī mass air flow sensor that is providing inaccurate readings to the ECU will cause disruption in fuel ignition, ignition timing and throttle response. It is important to identify issues with the mass air flow sensor before they cause permanent damage or leave you stranded in the middle of the highway. Various engine parameters can be adjusted based on these signals such as the air-fuel ratio, transmission shift points, etc.Ĭlick here to Understand Catalytic Converter Basics Mass Air Flow Sensor ProblemsĪ problem with the mass air flow sensor can cause engine problems and affect performance and fuel efficiency. An electronic chip converts this electrical current into a digital signal that can be read by the ECU to control the fuel injectors and ignition timing. A sensor measures this electrical current and equates it to the amount of air flowing through the throttle body and into the engine. When the throttle is opened, more air flows over the wire, cooling it down and requiring more electrical current to bring the wire back up to temperature. ![]() There is a temperature sensor placed close to the wire to measure the temperature of the flowing air. At idle, a minimal amount of air flows over the wire, requiring little electrical current to maintain the wire’s heat. It consists of an electrically heated wire to measure the amount of airflow entering the internal combustion engine, hence the name hot wire method. How Does a Mass Air Flow Sensor Work in an Engine?Ī common type of mass air flow sensor in use in most vehicles is the hot-wire type. Let’s examine the mass air flow sensor function and look at this component in greater detail.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |