With Electrical Connector (Pigtail Wire Harness) S1262. The Mass Air Flow (MAF) sensor is located in the air duct between the air cleaner. And the engines air intake. Locat20ion may be mounted to the throttle body or in the air cleaner. The MASS Air Flow sensor is a computer input that measures the amount of.Barometric pressure may also be calculated either in the sensor or by. The computer for correct air/fuel mixture. The computer uses this information for air/fuel. Mixture control, ignition timing and to aid the transmission in pressure control for accurate. Failure Symptoms: Malfunction Indicator Light illumination, failed emission test. Engine hesitation on acceleration, poor fuel economy, poor engine performance, engine nostart condition, engine s urging. The item "Mass Air Flow Sensor With Electrical Pigtail Connector Fits GMC Pontiac & Saturn" is in sale since Wednesday, July 26, 2017. This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Air Intake & Fuel Delivery\Sensors". The seller is "globalsourcewd" and is located in El Monte, California. This item can be shipped worldwide.