Ford F150 Pickup. Instruction — part 1292

Fig. 35: Disconnecting DPFE System (5.4L 4V)
Courtesy of FORD MOTOR CO.

2003 Ford Pickup F150

2003 ENGINE PERFORMANCE Removal & Installation - Blackwood, Expedition, F150 Pickup & Navigator - Gasoline

Fig. 36: Locating Power Steering Reservoir Bracket Bolts (5.4L 4V)
Courtesy of FORD MOTOR CO.

2003 Ford Pickup F150

2003 ENGINE PERFORMANCE Removal & Installation - Blackwood, Expedition, F150 Pickup & Navigator - Gasoline

Fig. 37: Locating EGR Adapter Bolts (5.4L 4V)
Courtesy of FORD MOTOR CO.

2003 Ford Pickup F150

2003 ENGINE PERFORMANCE Removal & Installation - Blackwood, Expedition, F150 Pickup & Navigator - Gasoline

Fig. 38: Upper Intake Manifold Tightening Sequence (5.4L 4V)
Courtesy of FORD MOTOR CO.

Removal & Installation (5.4 4V - Lower Intake Manifold)

1. Remove upper intake manifold. See REMOVAL & INSTALLATION (5.4L 4V - UPPER INTAKE

MANIFOLD) . Disconnect the fuel lines. Disconnect the engine water bypass hose. Disconnect the water
temperature indicator sender electrical connector. See Fig. 39 . Disconnect the upper radiator hose, the
heated water inlet hose and the heated Positive Crankcase Ventilation (PCV) hose.

2. Remove the four bolts and the generator upper support bracket. Disconnect the 8 fuel injector electrical

connectors. Disconnect the vacuum hose from the fuel injector pressure regulator and position the hose
aside. See

Fig. 40

. Disconnect the wiring harness pin type retainer. Remove and discard lower intake

manifold bolts. Remove lower intake manifold. Remove the bolts and the radio ignition interference
capacitors. See Fig. 41 .

CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or

other abrasive means to clean the sealing surfaces. These tools
cause scratches and gouges which make leak paths. Lower intake
gaskets may be reused, if undamaged. Lower intake manifold bolts
must be replaced.

2003 Ford Pickup F150

2003 ENGINE PERFORMANCE Removal & Installation - Blackwood, Expedition, F150 Pickup & Navigator - Gasoline