How to remove and install the MAF sensor on Mercury Mariner?

For 2006 and earlier models, start by disconnecting the cable from the negative battery terminal. Next, remove the air intake duct by loosening the hose clamp screw and pulling off the duct, then disconnect the electrical connector from the MAF sensor. After that, disconnect the electrical connector from the MAF sensor and remove the half of the air filter housing that includes the MAF sensor. Detach the MAF sensor from the air filter housing cover by removing the four retaining nuts, then take out the MAF sensor. Installation is the reverse of removal, ensuring the MAF sensor retaining nuts are tightened securely. Once the battery is reconnected, the Powertrain Control Module must relearn its idle and fuel trim strategy for optimal driveability and performance. For 2007 and later models, disconnect the sensor wiring harness, remove the two mounting screws, and pull the sensor out of the air duct, with installation being the reverse of removal.

Genuine Mercury Mariner Mass Air Flow Sensor

MAF Sensor Meter

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Mercury Mariner Sensor Assembly
Part Number: 3L3Z-12B579-BA
$152.90 MSRP: $252.73
You Save: $99.83 (40%)
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Product Specifications
- Other Name: Sensor Assy
- Manufacturer Note: 4.6L, Police
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2011 Mercury Mariner | 4 Cyl 2.3L, 4 Cyl 2.3L Hybrid Gas/Electric DOHC, 4 Cyl 2.5L Duratec (110kW/150PS), 4 Cyl 2.5L PFI Gas/Electric, 6 Cyl 3.0L DOHC EFI Modular, 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 5-Speed Manual Transmission, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)
View related parts
Mercury Mariner Sensor Assembly
Part Number: 1L2Z-12B579-BARM
Product Specifications
- Other Name: Sensor Assy
- Replaced by: 1L2Z-12B579-ARM
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2007 Mercury Mariner | 6 Cyl 3.0L DOHC EFI Modular | 4AT CD4E, 5-Speed Manual Transmission, 5-Speed Manual Transmission - AK, 6-Speed Automatic Transmission 6F Mid-Range, CVT Auto Trans Powersplit Elec, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Right Hand Drive), Front-Wheel Drive (Left Hand Drive), Left Hand Drive, Two-Wheel Drive (Left Hand Drive), Two-Wheel Drive (Right Hand Drive)

Mercury Mariner Mass Air Flow Sensor

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Mercury Mariner Mass Air Flow Sensor Parts Questions & Experts Answers

Sensor Assembly
3L3Z-12B579-BA
Q: How to remove and install the MAF sensor on Mercury Mariner?
A: For 2006 and earlier models, start by disconnecting the cable from the negative battery terminal. Next, remove the air intake duct by loosening the hose clamp screw and pulling off the duct, then disconnect the electrical connector from the MAF sensor. After that, disconnect the electrical connector from the MAF sensor and remove the half of the air filter housing that includes the MAF sensor. Detach the MAF sensor from the air filter housing cover by removing the four retaining nuts, then take out the MAF sensor. Installation is the reverse of removal, ensuring the MAF sensor retaining nuts are tightened securely. Once the battery is reconnected, the Powertrain Control Module must relearn its idle and fuel trim strategy for optimal driveability and performance. For 2007 and later models, disconnect the sensor wiring harness, remove the two mounting screws, and pull the sensor out of the air duct, with installation being the reverse of removal.