1998 Ford Truck Expedition 4WD
5.4L EFI 8cyl
PCM Ford's Location:
* Ranger - behind instrument panel (cowl), center to both driver and
* Explorer/Mountaineer - behind instrument panel (cowl), (access from
engine compartment dash panel) on passenger side to center of vehicle.
* All other F-Series, Expedition/Navigator - lower dash panel on
* Excursion - lower dash panel on driver side.
The PCM is behind the glove box and has a big harness connector in the
firewall that you access from the engine compartment.
REMOVAL & INSTALLATION
Fig. 1 The calibration number will be needed to order such
parts as a replacement PCM, various sensors, and almost any emission
control component. Typically this number is attached to a label found on
the driver's door or the door pillar
1997-00 F-150, F-250, Expedition and Navigator
Fig. 2 Loosen the connector retaining bolt and remove the PCM
Fig. 3 Remove the passenger side front door scuff plate
Fig. 4 Remove the passenger side kick panel
Fig. 5 Remove the PCM bracket clip and remove the PCM
Remove the battery and the battery tray.
Loosen the connector retaining bolt and remove the PCM connector.
Remove the passenger side front door scuff plate.
Remove the passenger side kick panel.
Remove the PCM bracket clip.
Remove the PCM.
Installation is the reverse of removal.
Tighten the PCM connector retaining bolt to 36-44 inch lbs. (4-5