Chrysler neon 1997 Service Manual page 1343

14 - 56 FUEL SYSTEM
REMOVAL AND INSTALLATION (Continued)
DOWNSTREAM HEATED OXYGEN SENSOR
The downstream heated oxygen sensor threads into
the exhaust outlet pipe behind the catalytic convertor
(Fig. 101).
REMOVAL
(1) Raise vehicle.
(2) Disconnect electrical connector from sensor.
(3) Disconnect sensor electrical harness from clips
along body.
(4) Remove sensor using an oxygen sensor crow
foot wrench such as Snap-On tool YA8875 or equiva-
lent (Fig. 102).
(5) After removing the sensor, the exhaust mani-
fold threads must be cleaned with an 18 mm X 1.5 +
6E tap. If reusing the original sensor, coat the sensor
threads with an anti-seize compound such as Loctite
771-64 or equivalent.
INSTALLATION
New sensors have compound on the threads and do
not require an additional coating.
(1) Install sensor using an oxygen sensor crow foot
wrench such as Snap-On tool YA8875 or equivalent
(Fig. 102). Tighten the sensor to 28 N·m (20 ft. lbs.)
torque.
(2) Connect sensor electrical harness from clips
along body.
(3) Connect electrical connector from sensor.
(4) Lower vehicle.
Fig. 101 Downstream Heated Oxygen Sensor
AIR CLEANER ELEMENT
Neon vehicles do not use a heated air inlet system.
The PCM adjusts fuel injector pulse width and igni-
tion timing to compensate for different ambient tem-
peratures.
The air cleaner attaches to a bracket on the rear of
the cylinder head. An ambient air duct supplies
underhood air for the engine.
HEATED DOWNSTREAM SENSOR OXYGEN
Fig. 102 Downstream Heated Oxygen Sensor
Removal/Installation
REMOVAL
(1) Remove air intake tube (Fig. 103) from air
cleaner and intake manifold (Fig. 104).
Fig. 103 Air Intake Duct
Fig. 104 Removal/Installation of Air Inlet Duct
CATALYTIC CONVERTOR
AIR INLET DUCT
PL