2005 JEEP LIBERTY catalytic converter

Materials Added To Fuel
All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
•The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine performance,
damage the emission control system.
•An out-of-tune engine, or certain fuel or ignition
malfunctions, can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact your dealer for service assistance.
•The use of fuel additives which are now being sold as
octane enhancers is not recommended. Most of these
products contain high concentrations of methanol.
Fuel system damage or vehicle performance problems
resulting from the use of such fuels or additives is not
the responsibility of the manufacturer.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
STARTING AND OPERATING 279
5

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
7

Spark Plugs
Spark plugs must fire properly to assure engine perfor-
mance and emission control. New plugs should be in-
stalled at the mileage specified in the appropriate main-
tenance chart. The entire set should be replaced if there is
any malfunction due to a faulty spark plug.
Refer to the “Vehicle Emission Control Information” label
in the engine compartment for spark plug information.
Catalytic Converter
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
converter as an emission control device.
Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
CAUTION!
Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. In
the event of engine malfunction, particularly involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
MAINTAINING YOUR VEHICLE 317
7

WARNING!
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be
grass or leaves coming into contact with your ex-
haust system. Do not park or operate your vehicle in
areas where your exhaust system can contact any-
thing that can burn.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune up to manufacturer’s specifica-
tions, should be obtained immediately.
To minimize the possibility of catalytic converter damage:
•Do not shut off the engine or interrupt the ignition
when the transmission is in gear and the vehicle is in
motion.
•Do not try to start the engine by pushing or towing the
vehicle.
•Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing.
•Do not idle the engine for prolonged periods during
very rough idle or malfunctioning operating conditions.
•Do not allow vehicle to run out of fuel.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
318 MAINTAINING YOUR VEHICLE

Bar, Light..........................121,354
Battery............................... 320
Emergency Starting..................... 299
Keyless Transmitter Replacement............ 29
Saving Feature (Protection)............... 120
Belts, Drive............................ 316
Body Mechanism Lubrication............... 323
B-Pillar Location........................ 258
Brake System........................... 330
Anti-Lock.........................170,247
Hoses.............................. 331
Master Cylinder....................... 332
Parking............................. 245
Warning Light........................ 173
Brake/Transmission Interlock............... 230
Break-In Recommendations, New Vehicle........ 73
Bulb Replacement.....................350,351
Bulbs, Light............................ 350Calibration, Compass..................... 137
Capacities, Fluid........................ 356
Caps, Filler
Fuel................................ 281
Radiator (Coolant Pressure)............... 327
Car Washes............................ 338
Carbon Monoxide Warning..............141,280
Cargo Area Cover....................... 151
Cargo Area Features...................... 151
Cargo Compartment
Light............................ 117,151
Luggage Carrier....................... 159
Cargo Light......................... 117,151
Cargo Organizer........................ 154
Cargo Tie-Downs........................ 152
Carpeting............................. 341
Cassette Tape and Player Maintenance......... 210
Cassette Tape Player..................... 178
Catalytic Converter...................... 317
INDEX 401
10

Caution, Exhaust Gas...................73,141
CD Changer........................187,193
CD Player..................184,189,191,195,198
CD Player Maintenance................... 211
Cellular Phone........................85,211
Center High Mounted Stop Light............ 355
Chains, Tire............................ 274
Changing A Flat Tire..................... 294
Charging System Light.................... 170
Chart, Tire Sizing........................ 255
Check Engine Light (Malfunction Indicator Light) . 310
Child Restraint......................63,68,70
Child Restraint Tether Anchors.............67,68
Child Safety Locks........................ 24
Climate Control......................... 212
Clock................................ 176
Clutch Interlocking Ignition System........220,229
Command-Trac Operation.................. 236
Compact Disc Maintenance................. 211Compact Disc Player..................178,184
Compass.............................. 137
Compass Calibration..................... 137
Compass Variance....................... 138
Computer, Trip/Travel.................... 135
Console, Overhead....................... 129
Contract, Service........................ 392
Converter, Catalytic...................... 317
Cool Down, Turbo....................... 224
Cooling System......................... 325
Adding Coolant (Antifreeze).............. 327
Coolant Capacity...................... 356
Coolant Level......................... 328
Disposal of Used Coolant................ 328
Drain, Flush, and Refill.................. 326
Inspection........................... 325
Points to Remember.................... 329
Pressure Cap......................... 327
Radiator Cap......................... 327
402 INDEX