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LESSON 3: POWERTRAIN
Air Filter
Intake Air Filter Module (IAFM)
The intake air distribution and filtering design has been replaced with:
•
New split line welded Intake Air Filter Module (IAFM).
The IAFM is a one piece, plastic component that houses the air filter element and Mass Air Flow (MAF) sensor.
CAUTION: When removing the air inlet tube from the IAFM, be sure to disengage the retaining tab
at the top of the tube. This can be accomplished by first removing the air filter element and then
pushing down on the retaining tab (accessed through the air filter door). The tube can then be
removed without damage.
•
The air filter replacement procedure has changed.
– Air filter tray slides out of the intake assembly.
– Remove the air filter from the tray for replacement.
– A Motorcraft brand air filter is strongly recommended because of better sealing characteristics.
NOTE: During installation, ensure the filter tray is fully seated. Engine noise may leak into the underhood
compartment and introduce unnecessary NVH.
2005 Expedition/Navigator New Model Technician Training 02-SEP-04 3-5