2003 JEEP GRAND CHEROKEE Code

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Page 1289 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (11) Lower the vehicle until it is about 2 feet from
the floor.
CAUTION: Ensure that the connecting rod bolts DO
NOT scratch the crankshaft journals or cylinder
walls. Short pieces of rubber hose, sli

Page 1358 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual CRANKSHAFT MAIN BEARING SELECTION
The main bearings are ªselect fitº to achieve proper
oil clearances. For main bearing selection, the crank-
shaft position sensor target wheel has grade identifi-
c

Page 1423 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual STANDARD PROCEDURE - FUEL SYSTEM
PRESSURE RELEASE
Use following procedure if the fuel injector
rail is, or is not equipped with a fuel pressure
test port.
(1) Remove fuel fill cap.
(2) Remove fuel pum

Page 1426 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (3) Apply a small amount of clean engine oil to
o-rings.
(4) Position filter/regulator to body and install 2
bolts. Tighten bolts to 3 N´m (30 in. lbs.) torque.
(5) Connect 3 fittings. Refer to Quick

Page 1438 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (14) Install air tube (or duct) at top of throttle
body.
(15) Install fuel tank cap.
(16) Connect negative battery cable to battery.
(17) Start engine and check for fuel leaks.
FUEL TANK
DESCRIPTION
T

Page 1439 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (19) Disconnect fuel return line at fuel filter/fuel
pressure regulator (Fig. 36). Refer to Quick-Connect
Fittings for procedures.
(20) Disconnect fuel pressure line at fuel filter/fuel
pressure regul

Page 1470 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual In Closed Loop operation, the PCM monitors cer-
tain O2 sensor input(s) along with other inputs, and
adjusts the injector pulse width accordingly. During
Open Loop operation, the PCM ignores the O2 se

Page 1530 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual FOURTH GEAR POWERFLOW
Fourth gear overdrive range is electronically con-
trolled and hydraulically activated. Various sensor
inputs are supplied to the powertrain control module
to operate the overdri