engine JEEP LIBERTY 2005 KJ / 1.G Repair Manual

IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
•On the highways — Slow down.
•In city traffic — While stopped, put transmission in N
(Neutral), but do not increase engine idle speed.
NOTE:There are steps that you can take to slow down
an impending overheat condition. If your air conditioner
is on, turn it off. The air conditioning system adds heat to
the engine cooling system and turning off the A/C
removes this heat. You can also turn the Temperature
Control to maximum heat, the Mode Control to floor, and
the Fan Control to High. This allows the heater core to act
as a supplement to the radiator and aids in removing heat
from the engine cooling system.If the pointer rises to the “H” (hot mark) on a vehicle
equipped with agasoline engine, pull over and stop the
vehicle. Do not turn the engine off. Idle the vehicle with
the air conditioning turned off, until the pointer drops
back into the normal range.CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads “H”,
pull over and stop the vehicle. Idle the vehicle with
the air conditioner turned off until the pointer drops
back into the normal range. If the pointer remains on
the “H”, and you hear continuous chimes, turn the
engine off immediately, and call for service.
WHAT TO DO IN EMERGENCIES 293
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If the coolant temperature of a vehicle equipped with a
diesel engineapproaches the “H” (hot mark) a warning
chime will sound to alert the driver. The air conditioning
system will turn off automatically and power loss will
occur until the engine temperature returns to the normal
range.
If the overheating condition persists a continuous chime
will sound to alert the driver. Reduce the vehicle speed
and or stop the vehicle while allowing the engine to idle
and cool the engine.JACKING AND TIRE CHANGING
WARNING!
•Getting under a jacked-up vehicle is dangerous.
The vehicle could slip off the jack and fall on you.
You could be crushed. Never get any part of your
body under a vehicle that is on a jack. If you need
to get under a raised vehicle, take it to a service
center where it can be raised on a lift.
•The jack is designed to use as a tool for changing
tires only. The jack should not be used to lift the
vehicle for service purposes. The vehicle should
be jacked on a firm level surface only. Avoid ice or
slippery areas.
294 WHAT TO DO IN EMERGENCIES

JUMP STARTING PROCEDURE
NOTE:Check the charge indicator on the battery. If the
indicator is light or yellow, replace the battery.
1. Wear eye protection and remove any metal jewelry
such as watch bands or bracelets that might make an
unintended electrical contact.
2. When boost is provided by a battery in another
vehicle, park that vehicle within booster cable reach but
without letting the vehicles touch. Set the parking brake,
place the automatic transmission in P (Park), or manual
transmission in N (Neutral), and turn the ignition to OFF
for both vehicles.
3. Turn off the heater, radio and all unnecessary electrical
loads.4. Connect one end of a jumper cable to the positive
terminal of the discharged battery. Connect the other end
of the same cable to the positive terminal of the booster
battery.
5. Connect the other cable, first to the negative terminal
of the booster battery and then connect the other end to
a non-paint metal surface on the engine of the vehicle
with the discharged battery. Make sure you have a good
contact on the engine.
6. Start the engine in the vehicle which has the booster
battery, let the engine idle a few minutes, then start the
engine in the vehicle with the discharged battery.
7. When removing the jumper cables, reverse the above
sequence exactly. Be careful of the moving belts and fan.
WHAT TO DO IN EMERGENCIES 299
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WARNING!
Do not attempt to push or tow your vehicle to get it
started. Unburned fuel could enter the catalytic
converter and, once the engine has started, ignite and
damage the converter and vehicle.
EMERGENCY TOW HOOKS — IF EQUIPPED
If your vehicle is equipped with tow hooks, they are
mounted in the front and the rear.
CAUTION!
Tow hooks are for emergency use only, to rescue a
vehicle stranded off road. Do not use tow hooks for
tow truck hookup or highway towing. You could
damage your vehicle. Tow straps are recommended
when towing the vehicle, chains may cause vehicle
damage.
WARNING!
Stand clear of vehicles when pulling with tow
hooks. Tow straps and chains may break, causing
serious injury.
WHAT TO DO IN EMERGENCIES 301
6

MAINTAINING YOUR VEHICLE
CONTENTS

2.4L Engine...........................306

3.7L Engine...........................307

2.8L Turbo Diesel Engine.................308

Onboard Diagnostic System — OBD II........309
▫Loose Fuel Filler Cap Message............309

Emissions Inspection And Maintenance
Programs............................310

Replacement Parts......................311

Dealer Service.........................312
Maintenance Procedures..................312
▫Engine Oil..........................312
▫Drive Belts — Check Condition And Tension . . 316
▫Spark Plugs.........................317
▫Catalytic Converter....................317
▫Engine Timing Belt — 2.4L Engine.........319
▫Ignition Wiring System — 2.4L Engine......319
▫Crankcase Emission Control System........319
▫Air Cleaner Filter.....................319
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Bulb Replacement......................351
▫Head Light..........................351
▫Front Turn Signal.....................352
▫Front Fog Light (Front Fascia Mounted).....353
▫Light Bar...........................354
▫Rear Tail, Stop, Turn Signal, And Back-Up
Lights.............................355▫Center High Mounted Stop Light (CHMSL) . . . 355

Fluid Capacities........................356

Recommended Fluids, Lubricants And
Genuine Parts.........................357
▫Engine.............................357
▫Chassis............................358
MAINTAINING YOUR VEHICLE 305
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2.4L ENGINE
306 MAINTAINING YOUR VEHICLE

3.7L ENGINE
MAINTAINING YOUR VEHICLE 307
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2.8L TURBO DIESEL ENGINE
308 MAINTAINING YOUR VEHICLE

ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light.” It will
also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your dealer for service as soon as
possible.CAUTION!
•Prolonged driving with the “Malfunction Indicator
Light” on could cause further damage to the emis-
sion control system. It could also affect fuel economy
and driveability. The vehicle must be serviced before
any emissions tests can be performed.
•If the “Malfunction Indicator Light” is flashing
while the engine is running, severe catalytic con-
verter damage and power loss will soon occur.
Immediate service is required.
Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is loose, improperly
installed, or damaged. A loose fuel filler cap message will
be displayed in the instrument cluster. Tighten the gas
cap until aclickingsound is heard. This is an indication
MAINTAINING YOUR VEHICLE 309
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