Chrysler Pacifica. Manual — part 731
3.8L
(1) Inspect and replace damaged fuel injector
O-rings (Fig. 37).
(2) Lightly lubricate the fuel injector O-rings with
a couple drops of clean engine oil.
(3) Install retaining clips on fuel injectors (Fig.
38).
(4) Fuel injector locator flange on fuel rail (Fig.
39).
(5) Push injectors into fuel injector rail until clips
are in the correct position (Fig. 40).
Fig. 37 FUEL INJECTOR AND CLIP
Fig. 38 FUEL INJECTOR O-RING
Fig. 39 FUEL RAIL LOCATOR TABS
Fig. 40 INSTALLING FUEL INJECTOR
CS
FUEL DELIVERY
14 - 15
FUEL RAIL (Continued)
(6) Fuel injector installed into fuel rail in the cor-
rect position (Fig. 41).
(7) Fuel rail with injectors installed (Fig. 42).
(8) Position fuel rail over cylinder heads, and push
rail into place (Fig. 43). Tighten fuel rail mounting
bolts to 28 N·m (250 in. lbs.) torque.
(9) Connect the electrical connectors to the fuel
injectors and lock (Fig. 44).
Fig. 41 FUEL INJECTOR CLIP
Fig. 42 FUEL INJECTORS INSTALLED
Fig. 43 FUEL RAIL BOLTS LOCATIONS
Fig. 44 FUEL INJECTOR WIRING HARNESS
14 - 16
FUEL DELIVERY
CS
FUEL RAIL (Continued)
(10) Connect the fuel supply tube quick connect
fitting to the fuel rail (Fig. 45). Refer to Quick Con-
nect Fittings in the Fuel Delivery Section.
(11) Inspect the intake manifold gaskets (Fig. 46).
(12) Intake manifold gaskets installed (Fig. 47).
(13) Install intake manifold plenum (Fig. 48),
(Refer to 9 - ENGINE/MANIFOLDS/INTAKE MANI-
FOLD - INSTALLATION).
Fig. 45 FUEL LINE DISCONNECT FITTING
Fig. 46 INTAKE GASKETS REMOVED
Fig. 47 INTAKE GASKET INSTALLED
Fig. 48 INTAKE MANIFOLD REMOVED
CS
FUEL DELIVERY
14 - 17
FUEL RAIL (Continued)
(14) Connect and lock the electrical for the MAP
sensor (1).
(15) Connect the vacuum lines (2) (Fig. 49).
(16) Connect the electrical connector for Throttle
Position Sensor (2), Idle Air Control Motor (3) (Fig.
50).
(17) Connect the purge line (1).
(18) Connect negative cable to battery.
FUEL TANK
REMOVAL
(1) Release the fuel pressure, refer to the Fuel
Pressure Release Procedure in this section.
(2) Disconnect the negative battery cable.
(3) Drain fuel tank dry into holding tank or a
properly labeled GASOLINE safety container.
(4) Raise vehicle and support.
(5) Disconnect the exhaust system between the
catalytic converter and the muffler.
(6) Support the exhaust system with jack stands.
(7) Remove muffler hanger rubber groments (Fig.
51).
Fig. 49 MAP SENSOR
1 - MAP Sensor
2 - Vacuum Lines
Fig. 50 THROTTLE BODY
1 - Purge Line
2 - Throttle Position Sensor
3 - Idle Air Control Motor
Fig. 51 MUFFLER HANGER
14 - 18
FUEL DELIVERY
CS
FUEL RAIL (Continued)
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