2008 DODGE NITRO spark plugs replace

MAINTAINING YOUR VEHICLE
CONTENTS
mEngine Compartment ± 3.7L...............348
mEngine Compartment ± 4.0L...............349
mOnboard Diagnostic System Ð OBD II........350
NLoose Fuel Filler Cap Message............351
mEmissions Inspection And Maintenance
Programs............................351
mReplacement Parts......................353
mDealer Service.........................353
mMaintenance Procedures..................354NEngine Oil..........................354
NDrive Belts Ð Check Condition And Tension . . 358
NSpark Plugs.........................358
NCatalytic Converter....................359
NCrankcase Emission Control System........361
NFuel Filter..........................361
NEngine Air Cleaner Filter................361
NMaintenance-Free Battery................362
NAir Conditioner Maintenance.............362
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Engine Oil Filter Selection
All of the manufacturer's engines have a full-flow type
disposable oil filter. Use a filter of this type for replace-
ment. The quality of replacement filters varies consider-
ably. Only high quality filters should be used to assure
most efficient service. Mopartengine oil filters are high
quality oil filters and are recommended.
Drive Belts Ð Check Condition and Tension
Belt tension is controlled by means of an automatic
tensioner. No belt tension adjustments are required.
However, belt and belt tensioner condition should be
inspected at the specified intervals, and replaced if re-
quired. See your authorized dealer for service
At the mileage indicated in the appropriate ªMainte-
nance Scheduleº, all belts and tensioner should be
checked for condition. Improper belt tension can cause
belt slippage and failure.Belts should be inspected for evidence of cuts, cracks,
glazing, or frayed cords and replaced if there is indication
of damage which could result in belt failure. Low gen-
erator belt tension can cause battery failure.
Also check belt routing to make sure there is no interfer-
ence between the belts and other engine components.
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 ªVehicle Emission Control Informationº label
in the engine compartment for spark plug information.
358 MAINTAINING YOUR VEHICLE

Perform Maintenance Every(Where time and mileage
are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Check the PCV valve, replace if necessary.30,000 50 000 30
Change the manual transmission fluid if using your
vehicle for any of the following: trailer towing, snow
plowing, heavy loading, taxi, police, delivery service
(commercial service), off-road, desert operation or
more then 50% of your driving is at sustained high
speeds during hot weather, above 90ÉF (32ÉC).30,000 50 000 30
Inspect the transfer case fluid. 30,000 50 000 30
Replace the spark plugs (3.7L Only).30,000 50 000 30
Change the automatic transmission fluid & filter if
using your vehicle for any of the following: police,
taxi, fleet or frequent trailer towing.60,000 100 000 60
Change the transfer case fluid if using your vehicle for
any of the following: police, taxi, fleet, off-road or fre-
quent trailer towing.60,000 100 000 60
402 MAINTENANCE SCHEDULES
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Perform Maintenance Every(Where time and mileage
are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Flush and replace the engine coolant. 102,000 170 000 60
Replace the spark plugs (4.0L Only).102,000 170 000 102
Replace the timing belt (4.0L Only).102,000 170 000 102
Change the automatic transmission fluid & filter. 120,000 200 000 120
Replace accessory drive belt(s) (3.7L and 4.0L). 120,000 200 000 120
WARNING!
You can be badly injured working on or around a
motor vehicle. Do only that service work for which
you have the knowledge and the right equipment. If
you have any doubt about your ability to perform a
service job, take your vehicle to a competent
mechanic.
MAINTENANCE SCHEDULES 403
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Shoulder Belt Anchorage.................. 44
Seats................................. 113
Adjustment.......................... 113
Cleaning............................ 379
Head Restraints....................... 116
Heated.............................. 116
Rear Folding......................... 118
Reclining............................ 114
Security Alarm (Theft Alarm).............18,170
Selection of Coolant (Antifreeze)............. 395
Selection of Oil......................... 356
Sentry Key (Immobilizer)................... 14
Sentry Key Programming................... 16
Sentry Key Replacement................... 15
Service Assistance....................... 406
Service Contract......................... 408
Service Manuals........................ 410
Setting the Clock..................199,215,226
Settings, Personal........................ 193Shift Lock Manual Override................ 253
Shift Speeds, Manual Transmission........... 251
Shifting
Automatic Transmission...............255,260
Manual Transmission................... 249
Shoulder Belts........................... 40
Signals, Turn................125,171,390,391,392
Sliding Cargo Floor
LoadNGo ........................... 156
Snow Chains (Tire Chains)................. 294
Spare Tire............................. 337
Spark Plugs............................ 358
Specifications
Fuel (Gasoline)........................ 306
Oil ................................ 356
Speed Control (Cruise Control).............. 128
Speedometer........................... 170
Starting............................... 245
Automatic Transmission................. 245
INDEX 429
10

INTRODUCTION INTRODUCTION ROLLOVER WARNING HOW TO USE THIS MANUAL WARNINGS AND CAUTIONS VEHICLE IDENTIFICATION NUMBER VEHICLE MODIFICATIONS/ALTERATIONS THINGS TO KNOW BEFORE STARTING YOUR VEHICLE A WORD
ABOUT YOUR KEYS Ignition Key RemovalKey-In-Ignition ReminderSENTRY KEY Replacement KeysCustomer Key ProgrammingGeneral InformationSTEERING WHEEL LOCK - IF EQUIPPED To Manually Lock the Steering WheelTo Release the Steering Wheel Lock
SECURITY ALARM SYSTEM - IF EQUIPPED To Arm the SystemTo Disarm the SystemILLUMINATED ENTRY REMOTE KEYLESS ENTRY To Unlock the Doors and LiftgateTo Lock the Doors and LiftgateUsing the Panic AlarmProgramming Additional TransmittersBattery
ReplacementGeneral InformationREMOTE STARTING SYSTEM - IF EQUIPPED DOOR LOCKS Manual Door LocksPower Door LocksAutomatic Door LocksAutomatic Unlock Doors on ExitChild-Protection Door Lock System (Rear Doors)WINDOWS Power WindowsWind
BuffetingLIFTGATE OCCUPANT RESTRAINTS Lap/Shoulder BeltsLap/Shoulder Belt Operating InstructionsAdjustable Upper Shoulder Belt AnchorageAutomatic Locking Mode - If EquippedEnergy Management FeatureSeat Belt PretensionersEnhanced Seat Belt Use
Reminder System (BeltAlert)Seat Belts and Pregnant WomenSeat Belt ExtenderDriver And Front Passenger Supplemental Restraint Systems (SRS) ChildRestraintENGINE BREAK-IN RECOMMENDATIONS SAFETY TIPS Exhaust GasSafety Checks You Should Make
Inside The VehicleSafety Checks You Should Make Outside The VehicleUNDERSTANDING THE FEATURES OF YOUR VEHICLE MIRRORS Inside Day/Night MirrorAutomatic Dimming Mirror - If EquippedOutside MirrorsExterior Mirrors Folding FeaturePower Remote Control
MirrorsIlluminated Vanity Mirrors - If EquippedHANDS-FREE COMMUNICATION (UConnect) - IF EQUIPPED OperationPhone Call FeaturesUConnect System FeaturesAdvanced Phone ConnectivityThings You Should Know About Your UConnect SystemGeneral Information
SEATS Front Manual Seat AdjustmentFront Seat Adjustment - Recline6-Way Drivers Power Seat with Manual ReclinerFold Flat Front Passenger SeatHead RestraintsHeated Seats - If Equipped60/40 Split Folding Rear Seat with Fold Flat FeatureTO OPEN AND CLOSE
THE HOOD LIGHTS Interior LightsMulti-Function Control LeverParking Lights, Instrument Panel Lights, and HeadlightsLights-On ReminderHeadlight Dimmer SwitchPassing LightFront Fog Lights - If EquippedTurn SignalsDaytime Running Lights - If EquippedWINDSHIELD
WIPERS AND WASHERS Intermittent Wiper SystemWindshield Wiper OperationWindshield WashersMist FeatureTILT STEERING COLUMN ELECTRONIC SPEED CONTROL - IF EQUIPPED Electronic Speed Control OperationTo ActivateTo Set At A Desired SpeedTo
DeactivateTo Resume SpeedTo Vary The Speed SettingManual TransmissionTo Accelerate For PassingELECTRONIC BRAKE CONTROL SYSTEM ABS (Anti-Lock Brake System)TCS (Traction Control System)BAS (Brake Assist System)ERM (Electronic Roll Mitigation)
ESP (Electronic Stability Program)ESP/BAS Warning LampGARAGE DOOR OPENER - IF EQUIPPED Programming HomeLinkGate Operator/Canadian ProgrammingUsing HomeLinkReprogramming a Single HomeLink ButtonSecurityTroubleshooting TipsGeneral
InformationPOWER SUNROOF - IF EQUIPPED Opening Sunroof - ExpressClosing Sunroof - ExpressPinch Protect FeaturePinch Protect OverrideVenting Sunroof - ExpressSunshade OperationWind BuffetingSunroof MaintenanceELECTRICAL POWER OUTLET Electrical
Outlet Use With Engine OffPOWER INVERTER CUP HOLDERS STORAGE Front Storage CompartmentConsole Storage CompartmentCARGO AREA FEATURES Cargo LightCargo Tie-Down HooksCargo Load Floor - If EquippedRear Cargo Slide Out System (LOAD N
GO) - If EquippedREAR WINDOW FEATURES Rear Window Wiper/Washer - If EquippedRear Window Defroster - If EquippedROOF LUGGAGE RACK- NON FUNCTIONAL INSTRUMENT PANEL AND CONTROLS INSTRUMENT PANEL AND CONTROLS INSTRUMENT
CLUSTER INSTRUMENT CLUSTER DESCRIPTION COMPASS AND TRIP COMPUTER - IF EQUIPPED Control ButtonsTrip ConditionsCompass/Temperature DisplayELECTRONIC VEHICLE INFORMATION CENTER (EVIC) - IF EQUIPPED Electronic Vehicle Information
Center (EVIC) DisplaysOil Change RequiredTrip FunctionsCompass DisplayTelephone - If EquippedPersonal Settings (Customer Programmable Features)RADIO GENERAL INFORMATION Radio Broadcast SignalsTwo Types of SignalsElectrical DisturbancesAM Reception
FM ReceptionSALES CODE REQ - AM/FM STEREO RADIO AND 6-DISC CD/DVD CHANGER (MP3/WMA AUX JACK) Operating Instructions - Radio ModeOperation Instructions - (DISC MODE for CD and MP3/WMA Audio Play, DVD-VIDEO)Notes On Playing MP3/WMA
FilesLIST Button (DISC Mode for MP3/WMA Play)INFO Button (DISC Mode for MP3/WMA Play)SALES CODE RES - AM/FM STEREO RADIO WITH CD PLAYER (MP3 AUX JACK) Operating Instructions - Radio ModeOperation Instructions - CD MODE for CD and MP3
Audio PlayNotes On Playing MP3 FilesLIST Button (CD Mode for MP3 Play)INFO Button (CD Mode for MP3 Play)SALES CODE RER - AM/FM/CD/DVD RADIO WITH NAVIGATION SYSTEM - IF EQUIPPED Operating Instructions - Satellite RadioClock Setting Procedure
SATELLITE RADIO (RSC) - IF EQUIPPED (RER/REQ/REN RADIOS ONLY) System ActivationElectronic Serial Number/Sirius Identification Number (ENS/SID)Selecting Satellite ModeSatellite AntennaReception QualityOperating Instructions - Satellite ModeOperating
Instructions - Hands Free Phone (If Equipped)Operating Instructions - Video Entertainment System (VES) (If Equipped)VIDEO ENTERTAINMENT SYSTEM (SALES CODE XRV) - IF EQUIPPED REMOTE SOUND SYSTEM CONTROLS - IF EQUIPPED Radio Operation
CD PlayerCD/DVD DISC MAINTENANCE CLIMATE CONTROLS Manual Air Conditioning and Heating SystemOperating TipsSTARTING AND OPERATING STARTING PROCEDURES Manual TransmissionAutomatic TransmissionNormal StartingExtreme Cold Weather
(below -20 degrees F or -29 degrees C)If Engine Fails to StartAfter StartingENGINE BLOCK HEATER - IF EQUIPPED MANUAL TRANSMISSION - IF EQUIPPED 6-Speed Manual TransmissionAUTOMATIC TRANSMISSION Shift Lock Manual Override - If Equipped
Brake/Transmission Interlock System4-Speed Automatic Transmission (3.7L Engine)5-Speed Automatic Transmission (4.0L Engine)Gear RangesFOUR-WHEEL DRIVE OPERATION MP 143 Single-Speed Part-Time Transfer Case - If EquippedShifting Procedure -
Electronically Shifted Transfer CaseMP 140 Single-Speed Full-Time Transfer Case - If EquippedON-ROAD DRIVING TIPS OFF-ROAD DRIVING TIPS When To Use 4L or 4LO (Low) RangeDriving Through WaterDriving In Snow, Mud and SandHill ClimbingTraction Downhill
After Driving Off-RoadPARKING BRAKE ANTI-LOCK BRAKE SYSTEM POWER STEERING TIRE SAFETY INFORMATION Tire Markings Tire Identification Number (TIN)Tire Loading and Tire PressureTIRES - GENERAL INFORMATION Tire PressureTire Inflation Pressures
Tire Pressures for High Speed OperationRadial-Ply TiresTire SpinningTread Wear IndicatorsLife of TireReplacement TiresAlignment and BalanceTIRE CHAINS TIRE ROTATION RECOMMENDATIONS TIRE PRESSURE MONITOR SYSTEM (TPMS) - IF EQUIPPED Base
System - If EquippedPremium System - If EquippedGeneral InformationFUEL REQUIREMENTS 3.7L Engine (If Equipped)4.0L Engine (If Equipped)Reformulated GasolineGasoline/Oxygenate BlendsMMT In GasolineMaterials Added To FuelFuel System CautionsCarbon
Monoxide WarningsADDING FUEL Fuel Filler Cap (Gas Cap)Loose Fuel Filler Cap MessageVEHICLE LOADING Certification LabelTRAILER TOWING Common Towing DefinitionsTrailer Hitch ClassificationTrailer Towing Weights (Maximum Trailer Weight Ratings)Trailer
and Tongue WeightTowing RequirementsTowing TipsRECREATIONAL TOWING (BEHIND MOTORHOME, ETC.) Towing - 2WD ModelsTowing - 4WD or All-Wheel Drive ModelsWHAT TO DO IN EMERGENCIES HAZARD WARNING FLASHERS IF YOUR ENGINE
OVERHEATS JACKING AND TIRE CHANGING Jack LocationSpare Tire StowageSpare Tire RemovalPreparations For JackingJacking InstructionsJUMP STARTING TOWING A DISABLED VEHICLE Two-Wheel Drive VehiclesFour-Wheel Drive VehiclesMAINTAINING YOUR
VEHICLE ENGINE COMPARTMENT - 3.7L ENGINE COMPARTMENT - 4.0L ONBOARD DIAGNOSTIC SYSTEM - OBD II Loose Fuel Filler Cap MessageEMISSIONS INSPECTION ANDMAINTENANCE PROGRAMS REPLACEMENT PARTS DEALER SERVICE
MAINTENANCE PROCEDURES Engine OilDrive Belts - Check Condition and TensionSpark PlugsCatalytic ConverterCrankcase Emission Control SystemFuelFilterEngine Air Cleaner FilterMaintenance-Free BatteryAir Conditioner MaintenancePower Steering Fluid Check
Driveline And Steering Component LubricationBody LubricationWindshield Wiper BladesWindshield WashersExhaust SystemCooling SystemHoses andVacuum/Vapor HarnessesBrake SystemAutomatic TransmissionHydraulic Clutch Fluid - Manual TransmissionManual
TransmissionTransfer CaseFront/Rear Axle FluidAppearance Care And Protection From CorrosionFUSES (INTEGRATED POWER MODULE) REPLACEMENT LIGHTBULBS BULB REPLACEMENT Head LightLeft Front Turn SignalRight Front Turn SignalFront Side Marker
Front Fog Light (Front Fascia Mounted)Rear Tail, Stop, Turn Signal, and Back-Up LightsCenter High Mounted Stop Light (CHMSL)FLUID CAPACITIES FLUIDS, LUBRICANTS AND GENUINE PARTS EngineChassisMAINTENANCE SCHEDULES EMISSION CONTROL
SYSTEM MAINTENANCE MAINTENANCE SCHEDULE Required Maintenance IntervalsIF YOU NEED CONSUMER ASSISTANCE SUGGESTIONS FOR OBTAINING SERVICE FOR YOUR VEHICLE Prepare For The AppointmentPrepare A ListBe Reasonable With
RequestsIF YOU NEED ASSISTANCE WARRANTY INFORMATION (U.S. Vehicles Only) MOPAR PARTS REPORTING SAFETY DEFECTS In CanadaPUBLICATION ORDER FORMS DEPARTMENT OF TRANSPORTATION UNIFORM TIRE QUALITY GRADES Treadwear
Traction GradesTemperature GradesINDEX