2008 DODGE NITRO engine overheat

Towing Tips
Before setting out on a trip, practice turning, stopping
and backing the trailer in an area away from heavy
traffic.
If using a manual transmission vehicle for trailer towing,
all starts must be in FIRST gear to avoid excessive clutch
slippage.
Towing Tips Ð Automatic Transmission
The ªDº range can be selected when towing. However, if
frequent shifting occurs while in this range, the ª3º range
should be selected.
NOTE:Using the ª3º (3.7L engine) or ª4º (4.0L engine)
range while operating the vehicle under heavy operating
conditions will improve performance and extend trans-
mission life by reducing excessive shifting and heat build
up. This action will also provide better engine braking.The automatic transmission fluid and filter should be
changed if you REGULARLY tow a trailer for more than
45 minutes of continuous operation. See Schedule ªBº in
section 8 of this manual for transmission fluid change
intervals.
Towing Tips Ð TOW/HAUL (If Equipped)
To reduce potential for automatic transmission overheat-
ing, press the ªTOW HAULº button when driving in
hilly areas or shift the transmission to Drive position 2 on
more severe grades. Refer to ªTransmission Shiftingº in
this section.
Towing Tips Ð Electronic Speed Control (If
Equipped)
þ
Don't use in hilly terrain or with heavy loads.
þWhen using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
STARTING AND OPERATING 329
5

WHAT TO DO IN EMERGENCIES
CONTENTS
mHazard Warning Flashers.................334
mIf Your Engine Overheats.................335
mJacking And Tire Changing................336
NJack Location........................336
NSpare Tire Stowage....................337
NSpare Tire Removal....................337NPreparations For Jacking................338
NJacking Instructions....................339
mJump Starting.........................341
mTowing A Disabled Vehicle................343
NTwo-Wheel Drive Vehicles...............344
NFour-Wheel Drive Vehicles...............344
6

IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
²On the highways Ð Slow down.
²In city traffic Ð 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.
CAUTION!
Driving with a hot cooling system could damage
your vehicle. If the temperature gauge reads ªH,º
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 ªH,º and you hear continuous chimes, turn the
engine off immediately, and call for service.
WHAT TO DO IN EMERGENCIES 335
6

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 359
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 exhaust
system. Do not park or operate your vehicle in areas
where your exhaust system can contact anything 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 dam-
age:
²Do not shut off the engine or interrupt the ignition
when the transmission is in gear and the vehicle is in
motion.
²Do not try to start the engine by pushing or towing the
vehicle.
²Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing.
²Do not idle the engine for prolonged periods during
very rough idle or malfunctioning operating condi-
tions.
²Do not allow vehicle to run out of fuel.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
360 MAINTAINING YOUR VEHICLE

Use only high purity water such as distilled or deionized
water when mixing the water/antifreeze (coolant) solu-
tion. The use of lower quality water will reduce the
amount of corrosion protection in the engine cooling
system.
Please note that it is the owner's responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
NOTE:Mixing antifreeze/coolant types will decrease
the life of the antifreeze/coolant and will require more
frequent antifreeze/coolant changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of
antifreeze/coolant, and to insure that antifreeze/coolant
will return to the radiator from the coolant reserve tank.The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
The warning words DO NOT OPEN HOT on the
cooling system pressure cap are a safety precaution.
Never add antifreeze/coolant when the engine is
overheated. Do not loosen or remove the cap to cool
an overheated engine. Heat causes pressure to build
up in the cooling system. To prevent scalding or
injury, do not remove the pressure cap while the
system is hot or under pressure.
Disposal of Used Engine Coolant
Used ethylene glycol based antifreeze/coolant is a regu-
lated substance requiring proper disposal. Check with
your local authorities to determine the disposal rules for
your community. To prevent ingestion by animals or
MAINTAINING YOUR VEHICLE 369
7

Electronic Roll Mitigation................ 133
Electronic Stability Program............... 134
Traction Control System................. 132
Electronic Roll Mitigation (ERM)............. 133
Electronic Speed Control (Cruise Control)...... 128
Electronic Stability Program (ESP).........134,170
Electronic Vehicle Information Center (EVIC).... 184
Emergency, In Case of
Hazard Warning Flasher................. 334
Jacking............................. 336
Overheating.......................... 335
Towing............................. 343
Emission Control System Maintenance......351,398
Engine
Air Cleaner.......................... 361
Block Heater......................... 248
Break-In Recommendations................ 76
Compartment......................348,349
Compartment Identification............348,349Coolant (Antifreeze).................... 395
Exhaust Gas Caution..................76,309
Fails to Start.......................... 246
Flooded, Starting...................... 246
Fuel Requirements..................306,394
Jump Starting......................... 341
Oil ...........................354,394,395
Oil Disposal.......................... 357
Oil Filter............................ 357
Oil Selection.......................... 394
Overheating.......................... 335
Starting............................. 245
Temperature Gauge..................... 168
Engine Oil Viscosity...................... 356
Engine Oil Viscosity Chart................. 356
Enhanced Accident Response Feature.......... 62
Entry System, Illuminated.................. 19
Event Data Recorder...................... 64
Exhaust Gas Caution...................76,309
420 INDEX

Vanity............................... 86
Modifications/Alterations, Vehicle............. 8
Monitor, Tire Pressure System............... 296
Mopar Parts.........................353,409
Multi-Function Control Lever............... 123
Navigation Radio........................ 225
Navigation System....................... 225
New Vehicle Break-In Period................ 76
Occupant Restraints....................... 39
Octane Rating, Gasoline (Fuel).............. 306
Odometer
Trip ................................ 179
Off-Pavement Driving (Off-Road)............ 268
Off-Road Driving (Off-Pavement)............ 268
Oil, Engine.........................354,395
Capacity............................ 394
Dipstick............................. 354Filter............................357,395
Identification Logo..................... 356
Materials Added to..................... 357
Recommendation...................356,394
Viscosity..........................356,394
Onboard Diagnostic System..............350,351
Opener, Garage Door (HomeLinkt) ........... 137
Outside Rearview Mirrors.................. 84
Overdrive.......................175,257,263
Overdrive OFF Switch.................257,263
Overheating, Engine...................169,335
Owner's Manual (Operator Manual).......... 410
Paint Care............................. 377
Paint Damage.......................... 377
Panic Alarm............................ 23
Parking Brake.......................... 272
Parking On Hill......................... 272
Passing Light........................... 124
426 INDEX