Corsa mass air flow meter symptoms silverado

Many types of problems may cause this light to come on, so you must have your car's computer analysed to see if the light is related to the mass airflow sensor. A vehicle's mass airflow sensor, or MAF, is the component that measures the flow and density of the air flowing into the combustion chamber. Remember, all air that enters the engine that is past the sensor must be accounted for or an inaccurate calculation will result. Car engine image by itsallgood from m. The sensor is a small unit with two exposed wires; the wires heat up when the car is running, and the MAF measures the airflow by detecting how quickly the flow of air cools the temperature of the wires. In many cases a mass airflow sensor may be blamed for your problem when it is doing its job just fine. The MAF sensor could get contaminated or damaged.

How to Detect and Clean a Faulty Mass Airflow Sensor

Similar driveability symptoms may occur from other ailments that are often blamed on a malfunctioning MAF sensor. Other common automobile problems can also cause these symptoms, so they don't specifically indicate MAF failure. If you do this and the scanner codes refer to a malfunctioning MAF, you will need to have the MAF inspected and likely replaced. You can access it from your iPad or smartphone. It helps the car's computer regulate the ratio of air to fuel. This can cause various driveability problems; most often a it is lack of power, stalling (especially when the engine is started cold) and poor acceleration. The code will be set if the frequency is either too high or too low or if the burn off cycle after shutdown fails.

Car engine image by itsallgood from m. The main job of the mass air flow sensor is to measure the amount of air entering the engine or air flow. Particle Buildup Sometimes the MAF will begin malfunctioning because it is dirty. Read about testing and replacing the air flow sensor on the next page.

Symptoms of a bad Mass Airflow Sensor Mass Air Flow

It may also hesitate under load, idle roughly, or run either rich or lean. Cleaning The MAF is mounted to the vehicles air cleaner box and connected to the computer with a wiring harness. An easy way to diagnose this is to hook up a live data feed from a scan tool. If anything is leaking, you will be able to tell immediately by the way the oxygen sensor responds to the carb cleaner being sucked into the engine, even if you cant hear the engine rpms change. After the scan, the scanner will display one or more alphanumeric codes, which may be looked up in a reference book that accompanies the scanner if the scanner is one that does not display the summary of the code on its screen. Remember, all air that enters the engine that is past the sensor must be accounted for or an inaccurate calculation will result.

The problem is often unmetered air that is entering the engine. Save Shares Saves Wavebreakmedia Ltd/Wavebreak Media/Getty Images Check Engine Light. If engine performance is restored or the check-engine-soon light goes off, it is likely that the MAF was dirty and not broken. Next » 1 2 m is mobile-friendly! You can access it from your iPad or smartphone. Remember, all air that enters the engine that is past the sensor must be accounted for or an inaccurate calculation will result.