DOWNSTREAM HEATED OXYGEN SENSOR 1/2
The O2S are located at the outlet ends of the cat-
alytic converter (Fig. 29).
REMOVAL
WARNING: THE EXHAUST MANIFOLD, EXHAUST
PIPES AND CATALYTIC CONVERTER BECOME
VERY HOT DURING ENGINE OPERATION. ALLOW
ENGINE TO COOL BEFORE REMOVING OXYGEN
SENSOR.
(1) Remove the negative battery cable.
(2) Raise and support the vehicle.
(3) Disconnect the wire connector from the O2S.
CAUTION: When disconnecting the sensor electri-
cal connector, do not pull directly on wire going
into sensor.
(4) Remove the O2S. Snap-On oxygen sensor
wrench (number YA 8875) may be used for removal
and installation.
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. Tighten to 30 N·m (22 ft. lbs.)
torque.
(2) Connect the O2S wire connector.
(3) Lower the vehicle.
(4) Install the negative battery cable.
AIR CLEANER
LH vehicles do not use a heated air inlet system.
The Powertrain Control Module (PCM) adjusts fuel
injector pulse width and ignition timing to compen-
sate for different ambient temperatures.
The air cleaner attaches to the a bracket on right
inner fender panel (Fig. 30). An opening in the body
panel connects the inlet duct to ambient air.
The air induction system uses 2 resonator between
the air cleaner and throttle body (Fig. 30).
Fig. 28 Heated Oxygen Sensor Removal/Installation
1 – PROPORTIONAL PURGE SOLENOID
2 – O2 SENSOR
Fig. 29 Downstream Heated Oxygen Sensor
1 – OXYGEN SENSORS
Fig. 30 Air Cleaner and Mounting Bracket
1 – AIR INLET RESONATOR
2 – AIR CLEANER HOUSING
14 - 42 FUEL SYSTEM LH
REMOVAL AND INSTALLATION (Continued)
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