Dodge Durango (DN). Manual — part 20

(2) Install and tighten two mounting bolts (screws)

to 7 N·m (60 in. lbs.) torque.

(3) Install electrical connector.
(4) Install air duct at throttle body.

IDLE AIR CONTROL (IAC) MOTOR—4.7L V–8
ENGINE

The IAC motor is located on the throttle body.

REMOVAL

(1) Remove air duct and air resonator box at throt-

tle body.

(2) Disconnect electrical connector from IAC motor

(Fig. 20).

(3) Remove two mounting bolts (screws) (Fig. 21).
(4) Remove IAC motor from throttle body.

INSTALLATION

(1) Install IAC motor to throttle body.
(2) Install and tighten two mounting bolts (screws)

to 7 N·m (60 in. lbs.) torque.

(3) Install electrical connector.
(4) Install air duct/air box to throttle body.

MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR—3.9/5.2/5.9L ENGINES

The MAP sensor is located on the front of the

throttle body (Fig. 26). An L-shaped rubber fitting is
used to connect the MAP sensor to throttle body (Fig.
27).

REMOVAL

(1) Remove air duct at throttle body.
(2) Remove

two

MAP

sensor

mounting

bolts

(screws) (Fig. 26).

(3) While removing MAP sensor, slide the vacuum

rubber L-shaped fitting (Fig. 27) from the throttle
body.

(4) Remove rubber L-shaped fitting from MAP sen-

sor.

INSTALLATION

(1) Install rubber L-shaped fitting to MAP sensor.

Fig. 25 Mounting Bolts (Screws)—IAC Motor—3.9/

5.2/5.9L Engines

1 – MOUNTING SCREWS
2 – IDLE SPEED MOTOR

Fig. 26 MAP Sensor Location—3.9/5.2/5.9L Engines

1 – MAP SENSOR
2 – MOUNTING SCREWS (2)

Fig. 27 MAP Sensor L-Shaped Rubber Fitting—3.9/

5.2/5.9L Engines

1 – MAP SENSOR
2 – RUBBER FITTING
3 – IDLE AIR PASSAGE

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FUEL SYSTEM

DN

REMOVAL AND INSTALLATION (Continued)

(2) Position sensor to throttle body while guiding

rubber fitting over throttle body vacuum nipple.

(3) Install MAP sensor mounting bolts (screws).

Tighten screws to 3 N·m (25 in. lbs.) torque.

(4) Install air duct at throttle body.

MANIFOLD ABSOLUTE PRESSURE (MAP)
SENSOR—4.7L V–8 ENGINE

The MAP sensor is located on the front of the

intake manifold (Fig. 28). An o-ring seals the sensor
to the intake manifold.

REMOVAL

(1) Disconnect electrical connector at sensor.
(2) Clean area around MAP sensor.
(3) Remove 2 sensor mounting bolts (Fig. 28).
(4) Remove MAP sensor from intake manifold.

INSTALLATION

(1) Clean MAP sensor mounting hole at intake

manifold.

(2) Check MAP sensor o-ring seal for cuts or tears.
(3) Position sensor into manifold.
(4) Install MAP sensor mounting bolts (screws).

Tighten screws to 3 N·m (25 in. lbs.) torque.

(5) Connect electrical connector.

POWERTRAIN CONTROL MODULE (PCM)

The PCM is located in the engine compartment

(Fig. 29).

REMOVAL

To avoid possible voltage spike damage to the

PCM, ignition key must be off, and negative battery
cable must be disconnected before unplugging PCM
connectors.

(1) Disconnect negative battery cable at battery.
(2) Remove cover over electrical connectors. Cover

snaps onto PCM.

(3) Carefully unplug the three 32–way connectors

from PCM.

(4) Remove three PCM mounting bolts and remove

PCM from vehicle.

INSTALLATION

(1) Install PCM and mounting bolts to vehicle.
(2) Tighten bolts to 3–5 N·m (30–40 in. lbs.).
(3) Check pin connectors in the PCM and the three

32–way connectors for corrosion or damage. Repair
as necessary.

(4) Install three 32–way connectors.
(5) Install cover over electrical connectors. Cover

snaps onto PCM.

(6) Install battery cable.
(7) Use the DRB scan tool to reprogram new PCM

with vehicles original Identification Number (VIN)
and original vehicle mileage. If this step is not done,
a Diagnostic Trouble Code (DTC) may be set.

Fig. 28 MAP and ECT Sensor Locations—4.7L V–8

Engine

1 – ECT SENSOR
2 – MOUNTING BOLTS (2)
3 – MAP SENSOR
4 – INTAKE MANIFOLD

Fig. 29 PCM Location and Mounting

1 – RIGHT FRONT FENDER
2 – PCM MOUNTING BOLTS (3)
3 – 32–WAY CONNECTORS (3)
4 – COVER
5 – POWERTRAIN CONTROL MODULE (PCM)

DN

FUEL SYSTEM

14 - 49

REMOVAL AND INSTALLATION (Continued)

OXYGEN SENSOR

REMOVAL

Never apply any type of grease to the oxygen

sensor electrical connector, or attempt any sol-
dering of the sensor wiring harness. For sensor
operation, it must have a comparison source of
oxygen from outside the exhaust system. This
fresh air is supplied to the sensor through its
pigtail wiring harness.

5.2L/5.9L Engines: The upstream O2S sensor is

located on exhaust downpipe (Fig. 30). The down-
stream sensor is located near outlet end of catalytic
converter (Fig. 31).

4.7L V-8 Engines: Refer to (Fig. 32) for locations.

WARNING: THE EXHAUST MANIFOLD, EXHAUST
PIPES

AND

CATALYTIC

CONVERTER

BECOME

VERY HOT DURING ENGINE OPERATION. ALLOW
ENGINE TO COOL BEFORE REMOVING OXYGEN
SENSOR.

(1) Raise and support the vehicle.
(2) Disconnect the wire connector from the O2S

sensor.

CAUTION: When disconnecting the sensor electri-
cal connector, do not pull directly on wire going
into sensor.

(3) Remove the O2S sensor with an oxygen sensor

removal and installation tool.

INSTALLATION

Threads of new oxygen sensors are factory coated

with anti-seize compound to aid in removal. DO
NOT add any additional anti-seize compound to
the threads of a new oxygen sensor.

(1) Install the O2S sensor. Tighten to 30 N·m (22

ft. lbs.) torque.

(2) Connect the O2S sensor wire connector.
(3) Lower the vehicle.

AIR CLEANER ELEMENT (FILTER)

REMOVAL

Housing removal is not necessary for element (fil-

ter) replacement.

(1) Pry up spring clips from housing cover (spring

clips retain cover to housing).

(2) Release housing cover from locating tabs on

housing (Fig. 33) and remove cover.

(3) Remove air cleaner element (filter) from hous-

ing.

(4) Clean inside of housing before replacing ele-

ment.

INSTALLATION

(1) Install element into housing.
(2) Position housing cover into housing locating

tabs.

(3) Pry up spring clips and lock cover to housing.

ENGINE COOLANT TEMPERATURE SENSOR—
3.9/5.2/5.9L ENGINES

The engine coolant temperature sensor is installed

into a water jacket at front of intake manifold near
rear of generator (Fig. 34).

Fig. 30 Upstream Oxygen Sensor Locations—5.2L/

5.9L V-8 Engines

1 – EXHAUST PIPE
2 – UPSTREAM OXYGEN SENSOR

Fig. 31 Downstream Oxygen Sensor Location—5.2L/

5.9L V-8 Engines

1 – DOWNSTREAM OXYGEN SENSOR
2 – FRAME RAIL
3 – CATALYTIC CONVERTER

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FUEL SYSTEM

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REMOVAL AND INSTALLATION (Continued)

REMOVAL

WARNING: HOT,

PRESSURIZED

COOLANT

CAN

CAUSE INJURY BY SCALDING. COOLING SYSTEM
MUST BE PARTIALLY DRAINED BEFORE REMOV-
ING

THE

COOLANT

TEMPERATURE

SENSOR.

REFER TO GROUP 7, COOLING.

(1) Partially drain cooling system. Refer to Group

7, Cooling.

(2) Disconnect electrical connector from sensor

(Fig. 34).

(3)

Engines

with

air

conditioning:

When

removing the connector from sensor, do not pull
directly on wiring harness. Fabricate an L-shaped
hook tool from a coat hanger (approximately eight
inches long). Place the hook part of tool under the
connector for removal. The connector is snapped onto
the sensor. It is not equipped with a lock type tab.

(4) Remove sensor from intake manifold.

INSTALLATION

(1) Install sensor.
(2) Tighten to 11 N·m (8 ft. lbs.) torque.
(3) Use long needlenose pliers to connect electrical

connector to sensor. The sensor connector is symmet-
rical (not indexed). It can be installed to the sensor
in either direction.

(4) Replace any lost engine coolant. Refer to Group

7, Cooling System.

ENGINE COOLANT TEMPERATURE SENSOR—
4.7L V-8 ENGINE

REMOVAL

WARNING: HOT,

PRESSURIZED

COOLANT

CAN

CAUSE INJURY BY SCALDING. COOLING SYSTEM
MUST BE PARTIALLY DRAINED BEFORE REMOV-
ING THE ENGINE COOLANT TEMPERATURE (ECT)
SENSOR. REFER TO GROUP 7, COOLING.

Fig. 32 Oxygen Sensor Locations—4.7L V-8 Engine

DN

FUEL SYSTEM

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REMOVAL AND INSTALLATION (Continued)