2003 JEEP GRAND CHEROKEE engine pressure

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Page 1436 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (12) Remove first three ignition coils on each bank
(cylinders #1, 3, 5, 2, 4 and 6). Refer to Ignition Coil
Removal/Installation.
(13) Remove 4 fuel rail mounting bolts (Fig. 22).
(14) Gently rock an

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (9) Disconnect speed control cable at throttle body
(if equipped). Refer to Speed Control Cable.
(10) Disconnect automatic transmission cable at
throttle body (if equipped).
(11) Remove cable routing

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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

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual INLET FILTER
REMOVAL
The fuel pump inlet filter (strainer) is located on
the bottom of fuel pump module (Fig. 42). The fuel
pump module is located on top of fuel tank.
The fuel pump inlet filter (stra

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (5) Push sensor against flywheel/drive plate. With
sensor pushed against flywheel/drive plate, tighten
mounting bolt to 7 N´m (60 in. lbs.) torque.
(6) Route sensor wiring harness into wire shield.
(

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual The PCM determines injector on-time (pulse width)
based on various inputs.
DIAGNOSIS AND TESTING - FUEL INJECTOR
To perform a complete test of the fuel injectors and
their circuitry, use the DRB scan

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JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual MAP SENSOR
DESCRIPTION
DESCRIPTION
On the 4.0L six-cylinder engine the MAP sensor is
mounted to the engine throttle body. On the 4.7L V-8
engine the MAP sensor is mounted to front of the
intake manifo

Page 1474 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual REMOVAL - 4.7L
CAUTION: Be careful not to damage or kink the
cable core wire (within the cable sheathing) while
servicing accelerator pedal or throttle cable.
(1) From inside vehicle, hold up accelera