The mass air flow sensor (commonly abbreviated to MAF) is one of the most crucial engine management sensors. A bad mass airflow sensor can leave your Chrysler 300’s engine running rough, or even inoperable.

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A MAF sensor steps the density of the wait entering the input manifold. It passes this information onto your 300’s ECU. The ECU uses this information in addition to other sensor data to regulate the quantity of fuel the enters the burning chamber.


If girlfriend do recognize that you need a brand-new mass airflow sensor, castle aren’t as well expensive. And, most of the time they are right by the air box and easy come replace.

Faulty Mass air flow Sensor Symptoms: Chrysler 300

When the mass airflow sensor has actually gone bad, you’ll definitely feel it. Right here are the most usual symptoms that a negative or failing MAF sensor:

Idle Issues– her 300 might run rich or lean once idling, or that may likewise idle erratically. A rich problem is once there is not sufficient air family member to the fuel in the air/fuel mixture. The exhaust shade is generally darker once running rich. A lean condition is when there is too much air loved one to fuel in the air fuel mixture. The exhaust color usually doesn’t change. Hard come Start– Without knowing the ideal amount of air entering into the intake, it have the right to be really daunting for the engine to start. And when the does, it doesn’t generally run an extremely well. Decreased Fuel Mileage– Fuel mileage have the right to suffer there is no the proper air/fuel mixture.
Here a couple of common MAF sensor layouts

300 bad MAF Sensor Diagnosis

If the MAF sensor has actually gone bad, it’ll create the check engine light and carry out an OBDII problem code. This is good because it help you narrow under the problem. The 2 most common trouble password in relationship to the MAF sensor are:

There are various other codes pertained to the mass air circulation sensor together well, yet these room the most common ones. Here’s a an excellent video on just how to diagnose a negative MAF sensor making use of a multimeter from Ratchets and Wrenches on YouTube.

Cleaning the Mass airflow Sensor

Often, the mass air flow sensor really only requirements cleaning once they go bad. Some folks recommend utilizing alcohol since it’s commonly on hand, and also can clean the sensor. This is a bad idea, that can ruin the sensor. Offers mass air flow sensor cleaner. It’s yes, really cheap and obtainable at any type of parts store. It certain beats the hell out of having to buy a new sensor.

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Locate the MAF Sensor– It’ll be in in between the air filter and also the accelerator body. Eliminate the Sensor- Take care not to damage the wiring exploit or the connector pins that receive the exploit in the MAF. Straightforward hand tools will be all that you require to finish the job. Clean the Sensor– currently that you’ve gotten rid of your 300’s MAF sensor, it’s time come clean it. You’ll need the MAF cleaner. You are no scrubbing anything. Let the chemicals perform their job. Around a dozen small bursts will certainly be all the you need. Replace the Sensor


Replacing a poor MAF sensor have the right to make your 300 feel like a new vehicle. An excellent luck with the diagnosis. If over there is anything the you would favor to add, please feel free to leaving a comment below.