The mass airflow sensor (commonly abbreviation to MAF) is among the most essential engine management sensors. A bad mass airflow sensor can leave your Jeep grand Cherokee’s engine running rough, or even inoperable.

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A MAF sensor measures the density of the waiting entering the intake manifold. It passes this information onto your cool Cherokee’s ECU. The ECU provides this information in addition to other sensor data to manage the lot of fuel the enters the combustion chamber.


If girlfriend do recognize that you need a new mass air flow sensor, lock aren’t too expensive. And, most of the moment they are best by the air box and easy to replace.

Faulty Mass airflow Sensor Symptoms: Jeep cool Cherokee

When the mass air flow sensor has actually gone bad, you’ll certainly feel it. Right here are the most typical symptoms the a poor or failing MAF sensor:

Idle Issues– Your cool Cherokee may run affluent or lean as soon as idling, or that may additionally idle erratically. A rich problem is when there is not enough air relative to the fuel in the air/fuel mixture. The exhaust shade is normally darker when running rich. A lean condition is when there is too lot air loved one to fuel in the wait fuel mixture. The exhaust shade usually doesn’t change. Hard to Start– Without discovering the ideal amount of waiting entering into the intake, it have the right to be really challenging for the engine come start. And when it does, the doesn’t typically run really well. Decreased Fuel Mileage– Fuel mileage can suffer without the suitable air/fuel mixture.
Here a pair of typical MAF sensor formats

Grand Cherokee poor MAF Sensor Diagnosis

If the MAF sensor has actually gone bad, it’ll cause the examine engine irradiate and administer an OBDII problem code. This is an excellent because it help you narrow under the problem. The 2 most common trouble password in relationship to the MAF sensor are:

There are other codes pertained to the mass air circulation sensor as well, but these are the most usual ones. Here’s a great video on exactly how to diagnose a bad MAF sensor using a multimeter indigenous Ratchets and Wrenches top top YouTube.

Cleaning the Mass air flow Sensor

Often, the mass airflow sensor really only requirements cleaning when they walk bad. Some folks recommend using alcohol because it’s typically on hand, and also can clean the sensor. This is a bad idea, that can destroy the sensor. Supplies mass air flow sensor cleaner. It’s yes, really cheap and easily accessible at any kind of parts store. It certain beats the heck out of having to purchase a new sensor.

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Locate the MAF Sensor– It’ll be in between the air filter and also the accelerator body. Eliminate the Sensor- Take care not to damage the wiring harness or the connector pins that receive the harness in the MAF. Simple hand devices will be all the you need to finish the job. Clean the Sensor– currently that you’ve eliminated your cool Cherokee’s MAF sensor, it’s time to clean it. You’ll require the MAF cleaner. Girlfriend are no scrubbing anything. Allow the chemicals do their job. About a dozen tiny bursts will certainly be all that you need. Replace the Sensor


Replacing a negative MAF sensor have the right to make your grand Cherokee feel favor a new vehicle. Good luck v the diagnosis. If there is anything the you would like to add, you re welcome feel complimentary to leaving a comment below.