![]() ![]() Connector: Switch off the ignition key > unplug the MAF sensor harness connector > Check for terminal pins, loose connections, rust, etc.Wiring: Look for burnt, damaged or deteriorated areas in the MAF sensor wiring.Based on the method, get the tool you need. Go through the inspection methods and choose which you’ll follow. To diagnose a failing MAF sensor, you’ll need a couple of tools at first. If one of the symptoms matches your current situation, then it’s time you became sure. Moreover, you’ll get the worst experience under wide-open throttle acceleration. Therefore, you get a time gap between your decision and the car’s execution. It will use the other sensors to decide whether more fuel is needed or not.ECU will sense this drop in the Engine vacuum at first.When you have a bad mass airflow sensor, your ECU makes a smart move to save your engine. Engine Indecision Under Load and Acceleration Moreover, to add insult to injury, your engine will die occasionally while rough idling. As a result, you’ll get a rough engine idle. ![]() So, the engine sometimes creates too lean a fuel mixture and sometimes floods the cylinders with fuel. Rough Engine IdleĪs we’ve said before, the engine becomes clueless about the airflow during the MAF sensor failure. As a result, you get a poor fuel economy. So, when your ECU guesses the fuel amount, there is a high chance that your cylinders get flooded. More Fuel Consumptionīased on the data of the MAF sensor, the ECU operates. In the case of older models, the car won’t start at all. This makes the engine starting process much more complicated.It uses all the other sensors to determine assumed data.As the Engine Control Unit isn’t able to measure the airflow it simply guesses the amount.Now, that you know the work of a MAF sensor, we’ll explain why the engine disagrees to start. It simply measures the amount of air entering the engine. So, we’ll give you other symptoms to identify a bad MAF sensor. And you’re suspecting that your MAF sensor is going bad. We’re assuming that your check engine light isn’t working or isn’t telling you about the problem. The most common one is that your check engine light will lighten up. So, let’s sense our way right into the details- Mass Air Flow Sensor SymptomsĪ bad mass airflow sensor will give you many signs. Now, if you are conscious enough to care about your bad MAF sensor, then we’re here to help you out.įrom here you’ll get to know about how you can detect a bad MAF Sensor with the check engine light and ways to fix it. So, brace yourself for the hole in your wallet. Keep ignoring and on one fine morning, your car will refuse to roll even afoot.Īnd a standstill car takes a lot more to fix than a running one. Or you might ignore it unknowingly as sometimes bad mass airflow sensor no check engine light happens. You might ignore the symptoms and extra costs. When a mass airflow sensor goes bad, your engine suffers a lot. ![]()
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