How do you replace the Manifold Absolute Pressure sensor on Mercury Mariner?

If you're working on a four-cylinder model, raise the vehicle and support it securely on jackstands. Disconnect the wiring harness from the sensor, which is mounted on the intake manifold on 2009 and later V6 engines. Remove the mounting bolt(s) and take out the sensor, noting that screws on four-cylinder models require a T25 Torx bit. Installation is the reverse of removal.

Genuine Mercury Mariner MAP Sensor

Manifold Air Pressure Sensor

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Mercury Mariner Map Manifold Absolute Pressure Sensor
Part Number: 4S4Z-9F479-AA
$71.50 MSRP: $118.18
You Save: $46.68 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Sensor Assy
- Replaced by: 1S7Z-9F479-AD
- 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 | 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)
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Mercury Mariner Sensor Assembly
Part Number: 5L8Z-9F479-AA
$61.76 MSRP: $122.73
You Save: $60.97 (50%)
ADD TO CART
Product Specifications
- Other Name: Sensor Assy; Map Sensor
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2008 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)
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Mercury Mariner Sensor Assembly
Part Number: 5L8Z-9S428-AA
$51.79 MSRP: $71.95
You Save: $20.16 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Sensor Assy
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2005-2008 Mercury Mariner | 4 Cyl 2.3L, 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)
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Mercury Mariner Map Sensor
Part Number: 6E5Z-9F479-BA
Product Specifications
- Other Name: Sensor Assy; M.A.P. Sensor
- Replaces: 6E5Z-9F942-BA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2009-2011 Mercury Mariner | 6 Cyl 3.0L OHC Duratec | 4AT CD4E, 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), Front-Wheel Drive (Left Hand Drive), Left Hand Drive

Mercury Mariner MAP Sensor

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Mercury Mariner MAP Sensor Parts Questions & Experts Answers

Map Manifold Absolute Pressure Sensor
4S4Z-9F479-AA
Q: How do you replace the Manifold Absolute Pressure sensor on Mercury Mariner?
A: If you're working on a four-cylinder model, raise the vehicle and support it securely on jackstands. Disconnect the wiring harness from the sensor, which is mounted on the intake manifold on 2009 and later V6 engines. Remove the mounting bolt(s) and take out the sensor, noting that screws on four-cylinder models require a T25 Torx bit. Installation is the reverse of removal.