Bad mass air flow sensor symptoms ford lexus

MAF) sensor measures the volume of air entering the engine so the Engine Control Unit (ECU) can calculate how much gasoline the fuel injectors should deliver to each cylinder in order to create the proper fuel-air ratio. Sometimes, however, a malfunction in this little instrument can lead to big problems, usually resulting in very poor engine performance.

There are a number of things on a car that are built to regulate the amount of air and fuel that get mixed. The mass airflow sensor is one of the most important of these sensors due to the job that it performs.

Mass airflow sensor problems can cause a variety of symptoms from the annoying to the must repair. We'll discuss these in-depth on this page.

Engine Light and Lack of Power Due to Failed Mass Air Flow Sensor on Lexus RX300The Check Engine Light may illuminate because the mass air flow sensor sends incorrect information to the engine control computer. This can cause a loss of power on acceleration.

How to Detect and Clean a Faulty Mass Airflow Sensor - CarsDirect

Check Engine Light to come on and engine starting/running problems.If the mass airflow sensor (MAF) is not functioning correctly, the vehicle may lack power when accelerating or going up hills.

Mass Airflow Sensor because my 20LR Discovery II has been having a stalling problem. It mainly occurs when I come to a stop or accelerate form a stop.

The following are the most commonly experienced drivability problems and a short description of what components may be affected. In each case, these suggestions are assuming the engine is mechanically sound (camshaft, pistons, timing chain or belt, valves, etc).

My 19Ford ranger runs fine sometimes then tach will drop by about 1/loose power then check engine lite comes on.

How to tell you got a bad MAF

Common symptoms related to a failed or faulty mass air flow meter include an erratic idle, stalling, or inability to hold idle, loss of power, reduced gas mileage, bad throttle response, or even a no-start condition. When diagnosing a faulty mass air flow sensor, it is important to check for oil or dirt contamination, intake leaks after the sensor (such as cracked broken vacuum lines, air intake hose, throttle body or intake manifold leaks), and broken or frayed wiring.