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The 2006 Jeep Grand Cherokee is equipped with a mass air flow sensor, located between the throttle body and the cabin air filter. This sensor monitors and regulates the flow of fresh air entering the vehicle and throughout the exhaust system. If the air flow sensor, also known as the MAF sensor, malfunctions, it will need to be replaced. The cost for the parts alone can range from $33 to $98. If you opt to have a mechanic or service professional replace it, expect to pay between $120 and $185 for labor.
In a 2006 Jeep Grand Cherokee 4.7L (or the 3.7L), there isn't a mass airflow sensor (MAF). Chrysler relies on the air pipe size and the pressure in the manifold to determine the air flow. This method appears to be consistent across 2005-2010 Grand Cherokees.
The mass air flow sensor in a 2006 Jeep Grand Cherokee is located on the right side of the air cleaner housing within the intake duct toward the rear of the engine bay.