2003 JEEP GRAND CHEROKEE Intake

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Page 1454 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (18) 4.0L Engine: Verify wire harness connector is
firmly connected to Engine Coolant Temperature
(ECT) sensor (Fig. 11).(19) 4.7L Engine: Verify MAP and Engine Coolant
Temperature (ECT) sensor electr

Page 1458 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual SPECIFICATIONS
TORQUE - FUEL INJECTION
DESCRIPTION N-m Ft. Lbs. In. Lbs.
Air Cleaner Housing Mount. Nuts 10 93
Air Cleaner Air Duct Clamps 4 35
Air Cleaner Resonator Bolts 4 35
Engine Coolant Temperat

Page 1462 of 2199

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.
(

Page 1465 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual INSTALLATION
INSTALLATION - 4.0L
The IAC motor is located on the throttle body.
(1) Install IAC motor to throttle body.
(2) Install and tighten two mounting bolts (screws)
to 7 N´m (60 in. lbs.) torq

Page 1466 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual INSTALLATION
INSTALLATION - 4.0L
The Intake Manifold Air Temperature (IAT) sensor
is installed into the intake manifold plenum near the
front of the throttle body (Fig. 27).
(1) Install sensor into in

Page 1467 of 2199

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 1468 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual (2) Remove two MAP sensor mounting bolts
(screws) (Fig. 31).
(3) While removing MAP sensor, slide the rubber
L-shaped fitting (Fig. 31) from the throttle body.
(4) Remove rubber L-shaped fitting from

Page 1471 of 2199

JEEP GRAND CHEROKEE 2003 WJ / 2.G Workshop Manual THROTTLE BODY
DESCRIPTION
The throttle body is located on the intake manifold.
Fuel does not enter the intake manifold through the
throttle body. Fuel is sprayed into the manifold by
the fuel injector