2003 JEEP GRAND CHEROKEE 4.7l

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Page 1407 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual EXHAUST PIPE - 4.7L
REMOVAL
WARNING: IF TORCHES ARE USED WHEN WORK-
ING ON THE EXHAUST SYSTEM, DO NOT ALLOW
THE FLAME NEAR THE FUEL LINES.
WARNING: THE NORMAL OPERATING TEMPERA-
TURE OF THE EXHAUST SY

Page 1408 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual NOTE: When servicing the exhaust system, replace
the factory installed uni-clamp with standard u-bolt
clamps.
(2) Position the catalytic converter onto the
exhaust pipe flange connection. Tighten reta

Page 1409 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual HEAT SHIELDS
DESCRIPTION
Heat shields are needed to protect both the vehicle
and the environment from the high temperatures
developed by the catalytic converter. The catalytic
converter releases addit

Page 1420 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual FUEL SYSTEM
TABLE OF CONTENTS
page page
FUEL DELIVERY..........................1FUEL INJECTION........................31
FUEL DELIVERY
TABLE OF CONTENTS
page page
FUEL DELIVERY
DESCRIPTION............

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 1431 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (b) If line is not kinked and pressure is low,
raise vehicle and disconnect fuel pressure line at
fuel filter/fuel pressure regulator (Fig. 15) . Three
fuel lines are attached to filter/regulator. The

Page 1434 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (8) Connect fuel return and pressure lines to fuel
pump module fittings (Fig. 16). Refer to Quick-Con-
nect Fittings.
(9) Install fuel tank. Refer to Fuel Tank Installa-
tion.
FUEL RAIL
DESCRIPTION
DE

Page 1435 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual CAUTION: The left and right fuel rails are replaced
as an assembly. Do not attempt to separate rail
halves at connector tube (Fig. 22). Due to design of
tube, it does not use any clamps. Never attempt