catalytic converter DODGE DAKOTA 2004 3.G Owners Manual

23. Malfunction Indicator Light
This light is part of an onboard diagnostic
system which monitors the emissions and en-
gine control system. If the vehicle is ready for
emissions testing the light will come on when the
ignition is first turned on and remain on, as a bulb
check, until the engine is started. If the vehicle is not
ready for emissions testing the light will come on
when the ignition is first turned on and remain on for
15 seconds, then blink for 5 seconds, and remain on
until the vehicle is started. If the bulb does not come
on during starting, have the condition investigated
promptly.
If this light comes on and remains on while driving, it
suggests a potential engine control problem and the need
for system service.
Although your vehicle will usually be drivable and not
need towing, see your dealer for service as soon as
possible.
CAUTION!
Prolonged driving with the MIL on could cause
damage to the engine control system. It also could
affect fuel economy and driveability.
If the MIL is flashing, severe catalytic converter
damage and power loss will soon occur. Immediate
service is required.
24. Door Ajar
The Door Ajar light will illuminate when the
ignition is ON and either one of the passen-
ger doors is opened.
25. Odometer/Trip Odometer Button
Press this button to toggle between the odometer and the
trip odometer display. Holding the button in resets the
trip odometer reading.
26. Odometer/Trip Odometer
The odometer shows the total distance the vehicle has
been driven.
INSTRUMENT PANEL AND CONTROLS 103
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NTire Markings........................167
NTire Identification Number (TIN)..........171
NTire Loading And Tire Pressure...........172
mTiresÐGeneral Information...............175
NTire Pressure.........................175
NTire Inflation Pressures.................176
NRadial-Ply Tires......................178
NCompact Spare Tire Ð If Equipped.........178
NTire Spinning........................179
NTread Wear Indicators..................180
NReplacement Tires.....................180
NAlignment And Balance.................181
mSupplemental Tire Pressure Information.....182
mTire Chains...........................182
mSnow Tires...........................183
mTire Rotation Recommendations...........183
mFuel Requirements.....................184
NReformulated Gasoline.................184
NGasoline/Oxygenate Blends..............185
NMMT In Gasoline.....................185
NSulfur In Gasoline.....................185
NMaterials Added To Fuel................186
mAdding Fuel..........................186
NFuel Filler Cap (Gas Cap)...............186
NFuel Tank Filler Tube...................187
NFuel System Cautions..................188
NCarbon Monoxide Warnings..............189
mCatalytic Converter.....................189
mVehicle Loading.......................191
NCertification Label.....................191
NCurb Weight.........................192
NLoading............................192
142 STARTING AND OPERATING

STARTING PROCEDURES
The starter should not be operated for more than 15
second intervals. Waiting a few seconds between such
intervals will protect the starter from overheating.
Manual Transmission
Apply the parking brake, place the gearshift control lever
in NEUTRAL and depress clutch pedal to the floor before
starting the vehicle. This vehicle is equipped with a
clutch interlocking ignition system. It will not start unless
the clutch is depressed.
Automatic Transmission
Start the engine with the shift lever in NEUTRAL or
PARK position. Apply the brake before shifting to any
driving range.
WARNING!
Do not attempt to push or tow your vehicle to get it
started. Vehicles equipped with an automatic trans-
mission cannot be started this way. Unburned fuel
could enter the catalytic converter and once the
engine has started, ignite and damage the converter
and vehicle. If the vehicle has a discharged battery,
booster cables may be used to obtain a start from a
booster battery or the battery in another vehicle. This
type of start can be dangerous if done improperly.
See section 6 of this manual for the proper jump
starting procedures and follow them carefully.
Normal Starting
Normal starting of either a warm or cold engine is
obtained without pumping or depressing the accelerator
pedal. Turn the key to the START position and release
when the engine starts. If the engine fails to start within
10 seconds, turn the key to the OFF position, wait 5
seconds, then repeat the starting procedure.
144 STARTING AND OPERATING

Gasoline/Oxygenate Blends
Some fuel suppliers blend unleaded gasoline with oxy-
genates such as 10% ethanol, MTBE and ETBE. Oxygen-
ates are required in some areas of the country during the
winter months to reduce carbon monoxide emissions.
Fuels blended with these oxygenates may be used in
your vehicle.
CAUTION!
DO NOT use gasolines containing METHANOL.
Gasoline containing methanol may damage critical
fuel system components.
MMT In Gasoline
MMT is a manganese-containing metallic additive that is
blended into some gasoline to increase octane. Gasolines
blended with MMT provide no performance advantage
beyond gasolines of the same octane number without
MMT. Gasolines blended with MMT reduce spark plug
life and reduce emission system performance in some
vehicles. We recommend that gasolines free of MMT beused in your vehicle. The MMT content of gasoline may
not be indicated on the gasoline pump; therefore, you
should ask your gasoline retailer whether or not his/her
gasoline contains MMT.
It is even more important to look for gasolines without
MMT in Canada because MMT can be used at levels
higher than allowed in the United States. MMT is pro-
hibited in Federal and California reformulated gasolines.
Sulfur In Gasoline
If you live in the northeast United States, your vehicle
may have been designed to meet California low emission
standards with Cleaner-Burning California reformulated
gasoline with low sulfur. If such fuels are not available in
states adopting California emission standards, your ve-
hicles will operate satisfactorily on fuels meeting federal
specifications, but emission control system performance
may be adversely affected. Gasoline sold outside of
California is permitted to have higher sulfur levels which
may affect the performance of the vehicle's catalytic
converter. This may cause the Check Engine or Service
Engine Soon light to illuminate. We recommend that you
try a different brand of unleaded gasoline having lower
STARTING AND OPERATING 185
5

WARNING!
A fire may result if gasoline is pumped into a
portable container that is inside of a vehicle. You
could be burned. Always place gas containers on the
ground while filling.
Fuel System Cautions
CAUTION!
Follow these guidelines to maintain your vehicle's
performance:
²The use of leaded gas is prohibited by Federal law.
Using leaded gasoline can impair engine performance,
damage the emission control system, and could result
in loss of warranty coverage.
²An out-of-tune engine, or certain fuel or ignition
malfunctions, can cause the catalytic converter to
overheat. If you notice a pungent burning odor orsome light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact your dealer for service assistance.
²When pulling a heavy load or driving a fully loaded
vehicle when the humidity is low and the temperature
is high, use a premium unleaded fuel to help prevent
spark knock. If spark knock persists, lighten the load,
or engine piston damage may result.
²The 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 and may not be
covered under the New Vehicle Warranty.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
188 STARTING AND OPERATING

Carbon Monoxide Warnings
WARNING!
Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon
monoxide poisoning:
²Do not inhale exhaust gases. They contain carbon
monoxide, a colorless and odorless gas which can kill.
Never run the engine in a closed area, such as a
garage, and never sit in a parked vehicle with the
engine running for an extended period. If the vehicle is
stopped in an open area with the engine running for
more than a short period, adjust the ventilation system
to force fresh, outside air into the vehicle.
²Guard against carbon monoxide with proper mainte-
nance. Have the exhaust system inspected every time
the vehicle is raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with all side
windows fully open.
²Keep the liftgate closed when driving your vehicle to
prevent carbon monoxide and other poisonous ex-
haust gases from entering the vehicle.
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 converter will not
require maintenance. However, you must keep the en-
gine maintained to assure proper operation and prevent
possible damage.
NOTE:Intentional tampering with emissions control
systems result in civil penalties being assessed against
you.
STARTING AND OPERATING 189
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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.
As with any vehicle do not park or operate this vehicle in
areas where combustible materials such as grass or leaves
can contact a hot exhaust system.
A scorching odor may appear if you continue to run a
malfunctioning engine. The odor may indicate severe
and abnormal catalyst overheating. If this occurs, the
vehicle should be stopped, the engine shut off and the
vehicle allowed to cool. Service, including a tune-up to
manufacturer's specifications should be obtained imme-
diately.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.
190 STARTING AND OPERATING

HAZARD WARNING FLASHER
The flasher switch is on the top of the steering column,
just behind the steering wheel. Press the flasher switch
and all front and rear directional signals will flash
intermittently.
Press the switch a second time to turn off the emergency
flashers.
This is an emergency warning system and should not be
used when the vehicle is in motion. Use it when your
vehicle is disabled and is creating a safety hazard for
other motorists.If it is necessary to leave the vehicle to go for service, the
flasher system will continue to operate with the ignition
key removed and the vehicle locked.
ADDING FUEL
On some models, the fuel tank filler tube, on vehicles
equipped with a catalytic converter, has a restricting door
about 2 inches (50 mm) inside the opening. If using a
portable fuel container, it should have a flexible nozzle
long enough to force open the restricting door.
WARNING!
A fire may result if gasoline is pumped into a
portable container that is in a vehicle or on a truck
bed. You could be burned. Always place gas contain-
ers on the ground while filling.
208 WHAT TO DO IN EMERGENCIES

MAINTAINING YOUR VEHICLE
CONTENTS
mEngine Compartment 3.7L V6.............221
mEngine Compartment 4.7L V-8............222
mOnboard Diagnostic System Ð OBD II......223
mEmissions Inspection And Maintenance
Programs
............................224
mReplacement Parts.....................225
mDealer Service........................225
mMaintenance Procedures.................226
NEngine Oil..........................226
NEngine Oil Filter......................229
NDrive Belts Ð Check Condition And Tension . . 230
NSpark Plugs.........................230NIgnition Cables.......................230
NEngine Air Cleaner Filter................230
NEngine Fuel Filter.....................231
NCatalytic Converter....................231
NMaintenance-Free Battery................232
NAir Conditioner Maintenance.............233
NPower Steering Ð Fluid Check............234
NFront Suspension Ball Joints..............235
NSteering Linkage......................235
NDrive Shaft Constant Velocity
Joints Ð 4X4 Models...................235
NBody Lubrication.....................235
7

WARNING!
The air cleaner can provide a measure of protection
in the case of engine backfire. Do not remove the air
cleaner unless such removal is necessary for repair or
maintenance. Make sure that no one is near the
engine compartment before starting the vehicle with
the air cleaner removed. Failure to do so can result in
serious personal injury.
Engine Fuel Filter
A plugged fuel filter can cause stalling, limit the speed at
which a vehicle can be driven or cause hard starting.
Should an excessive amount of dirt accumulate in the
fuel tank, frequent filter replacement may be necessary.
Catalytic Converter
The catalytic converter requires the use of unleaded fuel
only. Leaded gasoline will destroy the effectiveness of the
catalyst 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 the
vehicle.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
MAINTAINING YOUR VEHICLE 231
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