2002 JEEP LIBERTY torque

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 vehicle.
(2) Disconnect wire connector from O2S sensor.
CAUTION: When disconnecting sensor electrical
connector, do not pull directly on wire going into
sensor.
(3) Remove O2S sensor with an oxygen sensor
removal and installation tool.
(4) Clean threads in exhaust pipe using appropri-
ate tap.
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
threads of a new oxygen sensor.
(1) Install O2S sensor. Tighten to 30 N´m (22 ft.
lbs.) torque.
(2) Connect O2S sensor wire connector.
(3) Lower vehicle.
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 injectors.
OPERATION
Filtered air from the air cleaner enters the intake
manifold through the throttle body. The throttle body
contains an air control passage controlled by an Idle
Air Control (IAC) motor. The air control passage is
used to supply air for idle conditions. A throttle valve
(plate) is used to supply air for above idle conditions.
Certain sensors are attached to the throttle body.
The accelerator pedal cable, speed control cable and
transmission control cable (when equipped) are con-
nected to the throttle body linkage arm.
A (factory adjusted) set screw is used to mechani-
cally limit the position of the throttle body throttle
plate.Never attempt to adjust the engine idle
speed using this screw.All idle speed functions are
controlled by the PCM.
REMOVAL
2.4L
A (factory adjusted) set screw is used to mechani-
cally limit the position of the throttle body throttle
plate.Never attempt to adjust the engine idle
speed using this screw.All idle speed functions are
controlled by the Powertrain Control Module (PCM).
(1) Remove air cleaner tube at throttle body.
(2) Disconnect throttle body electrical connectors
at IAC motor and TPS.
(3) Remove all control cables from throttle body
(lever) arm. Refer to the Accelerator Pedal and Throt-
tle Cable section for removal/installation procedures.
(4) Disconnect necessary vacuum lines at throttle
body.
(5) Remove 3 throttle body mounting bolts (Fig.
23).
(6) Remove throttle body from intake manifold.
(7) Check condition of old throttle body-to-intake
manifold o-ring.
3.7L
A (factory adjusted) set screw is used to mechani-
cally limit the position of the throttle body throttle
plate.Never attempt to adjust the engine idle
speed using this screw.All idle speed functions are
controlled by the Powertrain Control Module (PCM).
(1) Remove air cleaner tube at throttle body.
(2) Disconnect throttle body electrical connectors
at IAC motor and TPS.
Fig. 23 THROTTLE BODY MOUNTING BOLTS - 2.4L
1 - THROTTLE BODY
2 - IGNITION COIL
3 - MOUNTING BOLTS (3)
KJFUEL INJECTION 14 - 43
OXYGEN SENSOR (Continued)

(3) Remove all control cables from throttle body
(lever) arm. Refer to the Accelerator Pedal and Throt-
tle Cable section for removal/installation procedures.
(4) Disconnect necessary vacuum lines at throttle
body.
(5) Remove 3 throttle body mounting bolts (Fig.
24).
(6) Remove throttle body from intake manifold.
(7) Check condition of old throttle body-to-intake
manifold o-ring (Fig. 25).
INSTALLATION
2.4L
(1) Check condition of throttle body-to-intake man-
ifold o-ring. Replace as necessary.
(2) Clean mating surfaces of throttle body and
intake manifold.(3) Install throttle body-to-intake manifold o-ring.
(4) Install throttle body to intake manifold.
(5) Install 3 mounting bolts. Tighten bolts to 12
N´m (105 in. lbs.) torque.
(6) Install control cables.
(7) Install electrical connectors.
(8) Install necessary vacuum lines.
(9) Install air cleaner duct at throttle body.
3.7L
(1) Check condition of throttle body-to-intake man-
ifold o-ring. Replace as necessary.
(2) Clean mating surfaces of throttle body and
intake manifold.
(3) Install throttle body-to-intake manifold o-ring.
(4) Install throttle body to intake manifold.
(5) Install 3 mounting bolts. Tighten bolts to 12
N´m (105 in. lbs.) torque.
(6) Install control cables.
(7) Install electrical connectors.
(8) Install necessary vacuum lines.
(9) Install air cleaner duct at throttle body.
Fig. 24 THROTTLE BODY MOUNTING BOLTS - 3.7L
1 - THROTTLE BODY
2 - MOUNTING BOLTS (3)
Fig. 25 THROTTLE BODY O-RING - 3.7L
1 - INTAKE MANIFOLD
2 - THROTTLE BODY O-RING
14 - 44 FUEL INJECTIONKJ
THROTTLE BODY (Continued)

3.7L
The Throttle Position Sensor (TPS) is mounted to
the throttle body (Fig. 32), or (Fig. 33).
(1) Disconnect TPS electrical connector.
(2) Remove 2 TPS mounting screws.
(3) Remove TPS.
INSTALLATION
2.4L
The Throttle Position Sensor (TPS) is mounted to
the rear of the throttle body.
The throttle shaft end of the throttle body slides
into a socket in the TPS (Fig. 33). The TPS must be
installed so that it can be rotated a few degrees. (If
sensor will not rotate, install sensor with throttle
shaft on other side of socket tangs). The TPS will be
under slight tension when rotated.
(1) Install TPS and retaining screws.
(2) Tighten screws to 7 N´m (60 in. lbs.) torque.
(3) Connect TPS electrical connector to TPS.(4) Manually operate throttle (by hand) to check
for any TPS binding before starting engine.
(5) Install air cleaner tube to throttle body.
3.7L
The Throttle Position Sensor (TPS) is mounted to
the throttle body (Fig. 32).
The throttle shaft end of the throttle body slides
into a socket in the TPS (Fig. 33). The TPS must be
installed so that it can be rotated a few degrees. (If
sensor will not rotate, install sensor with throttle
shaft on other side of socket tangs). The TPS will be
under slight tension when rotated.
(1) Install TPS and retaining screws.
(2) Tighten screws to 7 N´m (60 in. lbs.) torque.
(3) Connect TPS electrical connector to TPS.
(4) Manually operate throttle (by hand) to check
for any TPS binding before starting engine.
(5) Install air cleaner tube to throttle body.
Fig. 32 TPS/IAC MOTOR - 3.7L
1 - THROTTLE POSITION SENSOR (TPS)
2 - MOUNTING SCREWS
3 - IDLE AIR CONTROL MOTOR (IAC)
4 - MOUNTING SCREWS
Fig. 33 TPS INSTALLATION - 3.7
1 - THROTTLE BODY
2 - TPS
3 - THROTTLE BODY SHAFT
4 - SOCKET LOCATING TANGS
14 - 48 FUEL INJECTIONKJ
THROTTLE POSITION SENSOR (Continued)

COLUMN
TABLE OF CONTENTS
page page
COLUMN
DESCRIPTION..........................5
OPERATION - SERVICE PRECAUTIONS......5
REMOVAL.............................5
INSTALLATION..........................7
SPECIFICATIONS
TORQUE CHART......................8
SPECIAL TOOLS
STEERING COLUMN....................8
IGNITION SWITCH
DESCRIPTION..........................8
DIAGNOSIS AND TESTING - IGNITION
SWITCH.............................8
REMOVAL
IGNITION SWITCH REMOVAL.............9INSTALLATION
IGNITION SWITCH INSTALLATION.........9
KEY-IN IGNITION SWITCH
DESCRIPTION.........................10
DIAGNOSIS AND TESTING - KEY-IN IGNITION
SWITCH............................10
LOCK CYLINDER
REMOVAL.............................10
INSTALLATION.........................11
INTERMEDIATE SHAFT
REMOVAL.............................11
INSTALLATION.........................11
STEERING WHEEL
REMOVAL.............................12
INSTALLATION.........................12
COLUMN
DESCRIPTION
The standard non-tilt and tilt steering column has
been designed to be serviced as an assembly. The col-
umn is connected to the steering gear with a one
piece shaft. The upper half has a support bearing
mounted to a bracket. The bracket mounts to the
frame rail with two nuts. The shaft is serviceable.
The key cylinder, switches, clock spring, trim shrouds
and steering wheel are serviced separately.
OPERATION - SERVICE PRECAUTIONS
Safety goggles should be worn at all times when
working on steering columns.
To service the steering wheel, switches or airbag,
refer to Electrical - Restraints and follow all WARN-
INGS and CAUTIONS.
WARNING: THE AIRBAG SYSTEM IS A SENSITIVE,
COMPLEX ELECTRO-MECHANICAL UNIT. BEFORE
ATTEMPTING TO DIAGNOSE, REMOVE OR INSTALL
THE AIRBAG SYSTEM COMPONENTS YOU MUST
FIRST DISCONNECT AND ISOLATE THE BATTERY
NEGATIVE (GROUND) CABLE. THEN WAIT TWOMINUTES FOR THE SYSTEM CAPACITOR TO DIS-
CHARGE. FAILURE TO DO SO COULD RESULT IN
ACCIDENTAL DEPLOYMENT OF THE AIRBAG AND
POSSIBLE PERSONAL INJURY. THE FASTENERS,
SCREWS, AND BOLTS, ORIGINALLY USED FOR
THE AIRBAG COMPONENTS, HAVE SPECIAL COAT-
INGS AND ARE SPECIFICALLY DESIGNED FOR THE
AIRBAG SYSTEM. THEY MUST NEVER BE
REPLACED WITH ANY SUBSTITUTES. ANYTIME A
NEW FASTENER IS NEEDED, REPLACE WITH THE
CORRECT FASTENERS PROVIDED IN THE SERVICE
PACKAGE OR FASTENERS LISTED IN THE PARTS
BOOKS.REMOVAL
(1) Position front wheelsstraight ahead.
(2) Remove and isolate the negative ground cable
from the battery.
(3) Remove the airbag, (Refer to 8 - ELECTRICAL/
RESTRAINTS/DRIVER AIRBAG - REMOVAL).
NOTE: If equipped with cruise control, disconnect
clock spring harness from the cruise switch har-
ness on the steering wheel.
KJCOLUMN 19 - 5

INSTALLATION
(1) Align and install column into the steering cou-
pler.(2) Install column harness and connect harness to
switches.
(3) Reroute the shifter interlock cable through the
tie straps.
(4) Install the column onto the mounting studs.
(5) Install the two mounting nuts and the two
mounting bolts all finger tight.
CAUTION: Lower nuts must be installed and tight-
ened first then the upper nuts in order to prevent
damage to the capsules.
(6) Tighten the lower mounting nuts to 17 N´m
(150 in. lbs.).
(7) Tighten the upper mounting nuts to 17 N´m
(150 in. lbs.).
(8) Install the steering column coupler bolt and
tighten to 49 N´m (36 ft. lbs.).
(9) Reconnect the shifter interlock cable.
(10) Center the clock spring (if necessary) and
install it on the column, (Refer to 8 - ELECTRICAL/
RESTRAINTS/CLOCKSPRING - INSTALLATION).
(11) Snap together the column shrouds and install
the mounting screws.
(12) Install the knee blocker and the knee blocker
cover, (Refer to 23 - BODY/INSTRUMENT PANEL/
KNEE BLOCKER - INSTALLATION).
(13)
NOTE: Do not reuse the old steering wheel bolt (a
new bolt must be used)
NOTE: Be certain that the steering wheel mounting
bolt is tightened to the proper torque specification
to ensure proper clockspring operation.Install the
steering wheel and tighten bolt to 54 N´m (40 ft.
lbs.) (Refer to 19 - STEERING/COLUMN/STEERING
WHEEL - INSTALLATION).
NOTE: If equipped with cruise control, connect
clock spring harness to cruise switch harness on
the steering wheel.
(14) Install the airbag, (Refer to 8 - ELECTRICAL/
RESTRAINTS/DRIVER AIRBAG - INSTALLATION).
(15) Install the negative battery terminal.
Fig. 5 WIRING HARNESS COLUMN
1 - Column Wiring Harness
2 - Multi-function Switch
3 - Ignition Switch
4 - Steering Column
Fig. 6 CLOCK SPRING
1 - Tilt Lever
2 - Ignition Switch
3 - Clockspring
4 - Steering Column
5 - SKIM
KJCOLUMN 19 - 7
COLUMN (Continued)

SPECIFICATIONS
TORQUE CHART
TORQUE SPECIFICATIONS
DESCRIPTION N´m Ft. Lbs. In. Lbs.
Tilt Steering Column
Steering Wheel Bolt54 40 Ð
Tilt Steering Column
Mounting Bolts17 Ð 150
Tilt Steering Column
Coupler Bolt49 36 Ð
Non-Tilt Steering Column
Steering Wheel Bolt54 40 Ð
Non-Tilt Steering Column
Mounting Bolts17 Ð 150
Non-Tilt Steering Column
Coupler Bolt49 36 Ð
Ignition Switch Screws 2 Ð 17
SPECIAL TOOLS
STEERING COLUMN
IGNITION SWITCH
DESCRIPTION
The electrical ignition switch is located on the
steering column. It is used as the main on/off switch-
ing device for most electrical components. The
mechanical key lock cylinder is used to engage/disen-
gage the electrical ignition switch.
DIAGNOSIS AND TESTING - IGNITION SWITCH
ELECTRICAL DIAGNOSIS
For ignition switch electrical schematics, Refer to
the appropriate section for the component.
MECHANICAL DIAGNOSIS (KEY DIFFICULT TO
ROTATE)
Vehicles equipped with an automatic trans-
mission and a floor mounted shifter:a cable is
used to connect the interlock device in the steering
column assembly, to the transmission floor shift
lever. This interlock system is used to lock the trans-
mission shifter in the PARK position when the key
lock cylinder is rotated to the LOCKED or ACCES-
SORY position. If the ignition key is difficult to
rotate to or from the LOCK or ACCESSORY position,
it may not be the fault of the key cylinder or the
steering column components. The brake transmission
shift interlock cable may be out of adjustment. (Refer
to 21 - TRANSMISSION/TRANSAXLE/AUTOMATIC
- 30RH/GEAR SHIFT CABLE - ADJUSTMENTS).
The interlock system within the steering column is
not serviceable. If repair is necessary, the steering
column assembly must be replaced. (Refer to 19 -
STEERING/COLUMN - REMOVAL).
Vehicles equipped with a manual transmis-
sion and a floor mounted shifter:on certain mod-
els, a button is located on the steering column behind
the ignition key lock cylinder. The button must be
manually depressed to allow rotation of the ignition
key lock cylinder to the LOCK or ACCESSORY posi-
tion. If it is difficult to rotate the key to the LOCK or
ACCESSORY position, the lever mechanism may be
defective. This mechanism is not serviceable. If
repair is necessary, the steering column assembly
must be replaced.(Refer to 19 - STEERING/COL-
UMN - REMOVAL).
Puller C-3894-A
19 - 8 COLUMNKJ
COLUMN (Continued)

STEERING WHEEL
REMOVAL
(1) Disable and remove the drivers side airbag.(Re-
fer to 8 - ELECTRICAL/RESTRAINTS/DRIVER AIR-
BAG - REMOVAL).
(2) Partially remove the steering wheel bolt and
leave the bolt in the column.
(3) Install puller C-3894±A or equivalent using the
top of the bolt to push on. (Fig. 13)
(4) Remove the steering wheel.
INSTALLATION
NOTE: Do not reuse the old steering wheel bolt (a
new bolt must be used)
(1) Install steering wheel to the column
NOTE: Be certain that the steering wheel mounting
bolt is tightened to the proper torque specification
to ensure proper clockspring operation.
(2) Install the new steering wheel bolt. Tighten the
bolt to 54 N´m (40 ft. lbs.).
(3) Install the drivers side air bag. (Refer to 8 -
ELECTRICAL/RESTRAINTS/DRIVER AIRBAG -
INSTALLATION).
Fig. 13 Steering Wheel Puller
1 - PULLER C-3894-A
2 - STEERING WHEEL
19 - 12 COLUMNKJ

GEAR
TABLE OF CONTENTS
page page
GEAR
DESCRIPTION.........................13
OPERATION...........................13
REMOVAL
REMOVAL - 4WD......................13
REMOVAL - 2WD......................14
INSTALLATION
INSTALLATION - 4WD..................14INSTALLATION - 2WD..................14
SPECIFICATIONS
TORQUE CHART......................15
SPECIAL TOOLS
OUTER TIE ROD END REMOVAL TOOL....15
GEAR
DESCRIPTION
A rack and pinion steering gear (Fig. 1) is made up
of two main components, the pinon shaft and the
rack. The gear cannot be adjusted or internally ser-
viced. If a malfunction or a fluid leak occurs, the gear
must be replaced as an assembly.
OPERATION
The steering column intermediate shaft is attached
to the gear pinion. The rotation of the pinion moves
the gear rack from side-to-side. This lateral action of
the rack pushes and pulls the tie rods, which are
connected to the steering knuckles to change the
direction of the front wheels.
REMOVAL
REMOVAL - 4WD
(1) Siphon the power steering fluid from the power
steering reservoir.
(2) Lock the steering wheel to prevent spinning of
the clockspring.
(3) Raise and support the vehicle.
(4) Remove the skid plate from under the front
end to gain access to the gear (Refer to 13 - FRAME
& BUMPERS/FRAME/FRONT SKID PLATE -
REMOVAL).
(5) Remove the front tire and wheel assemblies.
NOTE: Mark the alignment adjusting cams for eas-
ier installation.
(6) Remove the lower control arms. (Refer to 2 -
SUSPENSION/FRONT/LOWER CONTROL ARM -
REMOVAL).
(7) Remove the front axle. (Refer to 3 - DIFFER-
ENTIAL & DRIVELINE/FRONT AXLE - REMOV-
AL).
(8) Remove the tie rod end nuts.
(9) Separate tie rod ends from the knuckles with
Puller C-3894-A.
(10) Remove the intermediate shaft lower coupler
bolt and slide the coupler off the gear (Fig. 2).
(11) Remove power steering pressure hose bracket
(Fig. 3).
(12) Remove the power steering lines from the
gear (Fig. 2).
(13) Remove the mounting bolts from the gear to
the front cradle (Fig. 3).
(14) Remove the steering gear from the vehicle.
Fig. 1 Rack & Pinion Steering Gear
1 - TIE ROD - INNER
2 - TIE ROD - INNER
3 - TIE ROD END - OUTER LH
4 - BOOTS
5 - TIE ROD END - OUTER RH
KJGEAR 19 - 13