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Infiniti G35 Mass Air Flow Sensor

How to Find the Causes of Infiniti G35 Mass Air Flow Sensor Problems

The mass air flow sensor is just one of the several sensors required by the Federal government to be used among vehicles. This vital component in your Infiniti G35 measures the amount of air flowing inside the combustion chamber. When this component wears out, your engine's performance will be greatly affected. To fix it, you have to find the culprits first; you have to find what caused your Infiniti G35 mass air flow sensor to break. Here are the steps that you should follow when:

The check engine light is on

When the mass air flow sensor or MAF is not working, it won't be able to send air-flow data to the vehicle's ECU. The computer then uses the codes stored in its memory to compensate for the missing info that the sensor couldn't provide. This is the reason why a fault code is transmitted to the computer, which turns the check engine light on. To verify the cause of this problem, you have to plug a scan tool in the outlet found under your dash. Wait for a few minutes until you see the code on the tool's screen. Determine what the code means by reading the car owner's manual, then apply the necessary repair to fix the defect.

The vehicle stalls

A damaged mass air flow sensor does not have enough power or voltage to work efficiently. Because of this, it loses the ability to determine the amount of air-fuel mixture required by the engine. That's why your Infiniti G35 experiences hard start ups and engine stalls. You need to use an ohmmeter in this case. Perform a voltage test on the brown-striped wire while the engine is running at idle. The sensor must have at least 2.5 volts to function. Replace this component if the reading is below those digits.

The cleaning circuit is broken

Sometimes, the cause of the problem is not actually a broken mass air flow sensor. It is a dirty sensor instead. That's why you need to check the self-cleaning circuit relay regularly. This device keeps the MAF free from contaminants. If this relay is busted, it won't give off power or voltage. Again, you need to hook up the voltage meter and get the power measurement. No power means that the relay is no longer functioning.

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  • Maintaining Your Infiniti G35 Mass Air Flow Sensor in Four Easy Ways 27 February 2013

    Your Infiniti G35 mass air flow sensor plays a very crucial role in the overall performance of your engine. It monitors the amount of air-fuel mixture in the combustion system, so that the ECU can make the right adjustments to keep your vehicle running smoothly. When this component fails, your car will stall often. It will even have difficulty starting up. Prevent these hassles by maintaining your mass air flow sensor. Here are a few tips on how to protect its tip-top condition.


    Remove dirt buildup.

    The mass air flow sensor in your Infiniti G35 is attached to a small filter or cleaner box under the hood. This filter sifts the air to remove dust particles and other debris that can clog the engine. Overtime, it gets congested, thus losing its ability to take out harmful contaminants. You need to clean the filter so that the sensor can monitor air flow efficiently. Use a specialized MAF cleaner to dissolve stubborn stains and hardened dirt particles.


    Clean the sensor wires, but do not brush them.

    Make it a habit to clean the sensor wires if you want to prevent rust. Corrosion often causes inaccurate air-flow readings, which greatly affect the engine's performance. If you want to wash away rust and dirt immediately, spray these wires with electrical cleaner. You may also use a can of compressed air to blow dust particles away. Never brush the wires because their rubber coatings can get chipped. Brushes can also damage the connectors or the pins.


    Check the condition of your MAF regularly.

    Performing a periodic voltage test on the MAF will let you determine its condition. If the ohmmeter hits 12 volts, it is a good indication. It means that your MAF is still functioning properly. Any number below 12 volts simply means that your MAF is no longer efficient in measuring air-fuel mixture.


    Install the filter and other related components properly.

    Sometimes, problems occur when the filter and the other components were not set up correctly. The installation procedure alone is a very crucial task because the MAF is an extremely sensitive component. That's why you need to handle it with care. Tighten its mounting screws to secure the MAF to the filter.