The mass air flow sensor (commonly abbreviation to MAF) is just one of the most crucial engine administration sensors. A bad mass airflow sensor can leave her Jeep grand Cherokee’s engine to run rough, or even inoperable.

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A MAF sensor procedures the density of the wait entering the intake manifold. It overcome this details onto your cool Cherokee’s ECU. The ECU provides this information along with other sensor data to manage the quantity of fuel that enters the combustion chamber.


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

Faulty Mass air flow Sensor Symptoms: Jeep grand Cherokee

When the mass airflow sensor has actually gone bad, you’ll absolutely feel it. Right here are the most typical symptoms of a bad or failing MAF sensor:

Idle Issues– Your grand Cherokee might run affluent or lean once idling, or that may likewise idle erratically. A rich problem is as soon as there is not sufficient air loved one to the fuel in the air/fuel mixture. The exhaust color is typically darker as soon as running rich. A lean condition is once there is too much air loved one to fuel in the wait fuel mixture. The exhaust color usually doesn’t change. Hard to Start– Without understanding the ideal amount of wait entering right into the intake, it have the right to be really difficult for the engine come start. And when that does, that doesn’t commonly run very well. Decreased Fuel Mileage– Fuel mileage can suffer there is no the suitable air/fuel mixture.
Here a couple of common MAF sensor styles

Grand Cherokee negative MAF Sensor Diagnosis

If the MAF sensor has gone bad, it’ll trigger the examine engine light and carry out an OBDII problem code. This is great because it help you narrow under the problem. The 2 most common trouble codes in relation to the MAF sensor are:

There are various other codes pertained to the fixed air circulation sensor as well, however these space the most common ones. Here’s a an excellent video on just how to diagnose a poor MAF sensor using a multimeter native Ratchets and also Wrenches on YouTube.

Cleaning the Mass air flow Sensor

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

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Locate the MAF Sensor– It’ll it is in in between the waiting filter and also the accelerator body. Eliminate the Sensor- Take care not to damages the wiring exploit or the connector pins that get the exploit in the MAF. Basic hand devices will it is in all that you need to complete the job. Clean the Sensor– currently that you’ve eliminated your grand Cherokee’s MAF sensor, it’s time come clean it. You’ll require the MAF cleaner. Girlfriend are not scrubbing anything. Allow the chemicals perform their job. Around a dozen little bursts will be all the you need. Replace the Sensor


Replacing a negative MAF sensor deserve to make your cool Cherokee feel like a brand-new vehicle. Good luck with the diagnosis. If there is anything the you would like to add, please feel cost-free to leaving a comment below.