What happens when the mass airflow sensor goes bad?
A bad MAF sensor can cause too much fuel to be left in the combustion chamber, creating untimed detonations. You’ll experience this as poor drivability such as hesitations or sudden jerking motions, particularly during acceleration.
What happens when a mass air flow sensor goes bad?
The mass air flow (MAF) sensor, part of your vehicle’s electronic fuel injection system, is responsible for calculating the total amount of air entering the engine. A faulty MAF sensor can cause your vehicle to run too rich or run too lean.
What kind of air flow sensor do I need for my MAF?
Depending on the year and make of the vehicle, you may find different types of mass air flow sensors, from the old-style vane air flow meter to the modern era hot-wire mass air flow meter. Since hot-wire technology is the most widely used today, we’ll assume that your MAF is using that design.
What are the symptoms of a bad MAF sensor?
$0.00 1 Runs rich at idle or lean under load These symptoms indicate a MAF that has a contaminated hot wire. 2 Constantly runs rich or lean A MAF sensor that continuously over-reports or under-reports airflow into the engine will cause an engine to run rich or lean. 3 Rough idle or stalls
Can a bad air flow sensor trigger a check engine light?
Bad mass air flow sensor with no check engine light? Sometimes a mass airflow sensor can start to fail and even trigger engine error codes such as P0101 and P0102, without triggering a check engine light .
What do you need to know about a mass air flow sensor?
Signs Of A Failing Mass Air Flow Sensor. Your Mass Air Flow Sensor (MAF Sensor) is a piece of technology within your engine which tells your car’s computer how much air is entering the engine. This is important as it allows your engine to regulate its performance and change the intake of air to keep your engine running in its best condition.
When does a MAF sensor run lean or rich?
Your Engine Consistently Runs Lean or Rich If your MAF sensor is consistently reporting inaccurate information to your car’s computer (for example, due to deformation of the wire, or damage to the electrical equipment), then your engine will either consistently run lean or rich.
What to do if your air flow sensor is bad?
When it overestimates the airflow, the PCM releases too much fuel. Most of the time, you or a mechanic can fix the problem by cleaning the MAF sensor’s wires. If you’re noticing a Check Engine Light. Stop into AutoZone to have the code read for free with Fix Finder. Running lean is the opposite of running rich.
What can cause a Mazda air flow sensor to fail?
For example, in some Mazda Skyactiv engines, a failed mass air flow sensor could cause the engine to crank but not to start. An improperly installed or collapsed air filter can cause the air flow sensor to fail sooner. Over-soaking a washable air filter can also cause troubles with the air flow sensor.