Dodge 2000 DURANGO Service Manual page 770

14 - 50 FUEL SYSTEM
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.
Fig. 30 Upstream Oxygen Sensor Locations—5.2L/
5.9L V-8 Engines
1 – EXHAUST PIPE
2 – UPSTREAM OXYGEN SENSOR
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.
Fig. 31 Downstream Oxygen Sensor Location—5.2L/
5.9L V-8 Engines
1 – DOWNSTREAM OXYGEN SENSOR
2 – FRAME RAIL
3 – CATALYTIC CONVERTER
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).
DN