2004 DODGE INTREPID emissions

Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high speeds can cause damage and should be reported to
your dealer immediately. Engine damage resulting from
operating with a heavy spark knock may not be covered
by the new vehicle warranty.
Poor quality gasoline can cause problems such as hard
starting, stalling and stumble. If you experience these
problems, try another brand of regular gasoline before
considering service for the vehicle.
Over 40 automobile manufacturers around the world
have issued and endorsed consistent gasoline specifica-
tions (the World Wide Fuel Charter, WWFC) to define
fuel properties necessary to deliver enhanced emissions,
engine performance, and durability for your vehicle. The
manufacturer recommends the use of gasolines that meet
the WWFC specifications if they are available.
Reformulated Gasoline
Many areas of the country require the use of cleaner
burning fuel referred to as “Reformulated Gasoline”.Reformulated gasolines contain oxygenates, and are spe-
cially blended to reduce vehicle emissions and improve
air quality.
The manufacturer supports the use of reformulated gaso-
lines. Properly blended reformulated gasolines will pro-
vide excellent performance and durability of engine and
fuel system components.
Gasoline/Oxygenate Blends
Some fuel suppliers blend unleaded gasoline with mate-
rials called oxygenates such as 10% ethanol, MTBE and
ETBE. Oxygenates are required in some areas of the
country during the winter months to reduce carbon
monoxide emissions. Fuels blended with these oxygen-
ates may be used in your vehicle.
144 STARTING AND OPERATING

MAINTAINING YOUR VEHICLE
CONTENTS
2.7L Engine..........................167
3.5L Engine..........................168
Onboard Diagnostic System (OBD II).......169
Emissions Inspection And Maintenance
Programs
............................170
Replacement Parts.....................171
Dealer Service........................171
Maintenance Procedures.................172
▫Engine Oil..........................172
▫Crankcase Emission Control System........180
▫Fuel Filter..........................180
▫Air Cleaner Filter.....................180▫Maintenance-Free Battery................181
▫Air Conditioner......................182
▫Power Steering Fluid Check..............183
▫Chassis Lubrication....................184
▫Drive Shaft Universal Joints..............184
▫Body Mechanism Lubrication.............184
▫Windshield Wiper Blades................186
▫Windshield Washers...................186
▫Exhaust System......................187
▫Cooling System.......................188
▫Hoses And Vacuum/Vapor Harnesses.......191
▫Brake System........................192
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ONBOARD DIAGNOSTIC SYSTEM (OBD II)
To meet new government regulations and promote
cleaner air, your vehicle is equipped with a sophisticated
onboard diagnostic system called OBD II. This system
monitors the performance of the emissions, engine, and
automatic transaxle control systems. When these systems
are operating properly, your vehicle will provide excel-
lent performance and fuel economy, as well as engine
emissions well within current government regulations.
If any of these systems require service, the OBD II system
will turn on the Malfunction Indicator or Service Engine
Soon Light. It will also store diagnostic codes and other
information to assist your service technician in making
repairs. Although your vehicle will usually be driveable
and not need towing, see your dealer for service as soon
as possible.CAUTION!
Prolonged driving with the light on could cause
further damage to the emission control system. It
could also affect fuel economy and driveability. The
vehicle must be serviced before any state emissions
tests can be performed.
If the light is flashing, severe catalytic converter damage
and power loss will soon occur. Immediate service is
required.
If the gas cap is not tightened properly, the light may
come on. Be sure the gas cap is tightened every time you
add fuel. Tighten the cap until you hear it “click.”
MAINTAINING YOUR VEHICLE 169
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EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass
an inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.
For states which have an I/M (Inspection and
Maintenance) requirement, this check verifies the
following: the MIL (Malfunction Indicator Lamp)
is functioning and is not on when the engine is running,
and that the OBD (On Board Diagnostic) system is ready
for testing.
Normally, the OBD system will be ready. The OBD
system maynotbe ready if your vehicle was recently
serviced, if you recently had a dead battery, or a battery
replacement. If the OBD system should be determined
not ready for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition key actuated test
which you can use prior to going to the test station. To
check if your vehicle’s OBD system is ready, you must do
the following:
1. Insert your ignition key into the ignition switch.2. Turn the ignition to the ON position, but do not crank
or start the engine.
3. If you crank or start the engine, you will have to start
this test over.
4. As soon as you turn your key to the ON position, you
will see your MIL symbol come on as part of a normal
bulb check.
5. Approximately 15 seconds later, one of two things will
happen:
a. The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn off
the ignition key or start the engine. This means that
your vehicle’s OBD system isnot readyand you
shouldnotproceed to the I/M station.
b. The MIL will not flash at all and will remain fully
illuminated until you turn off the ignition key or
start the engine. This means that your vehicle’s OBD
system isreadyand you can proceed to the I/M
station.
170 MAINTAINING YOUR VEHICLE

If your OBD system isnot ready,you should see your
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your
vehicle as you normally would in order for your OBD
system to update. A recheck with the above test routine
may then indicate that the system is now ready.
Regardless of whether your vehicle’s OBD system is
ready or not ready, if the MIL symbol is illuminated
during normal vehicle operation, you should have your
vehicle serviced before going to the I/M station. The I/M
station can fail your vehicle because the MIL symbol is on
with the engine running.REPLACEMENT PARTS
Use of genuine Moparparts for normal/scheduled
maintenance and repairs is highly recommended to in-
sure the designed performance. Damage or failures
caused by the use of non-Moparparts for maintenance
and repairs will not be covered by the manufacturer’s
warranty.
DEALER SERVICE
Your dealer has the qualified service personnel, special
tools and equipment to perform all service operations in
an expert manner. Service Manuals are available which
include detailed service information for your vehicle.
Refer to these manuals before attempting any procedure
yourself.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
MAINTAINING YOUR VEHICLE 171
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Points to Remember
NOTE:
When the vehicle is stopped after a few miles of
operation, you may observe vapor coming from the front
of the engine compartment. This is normally a result of
moisture from rain, snow, or high humidity accumulat-
ing on the radiator and being vaporized when the
thermostat opens, allowing hot water to enter the radia-
tor.
If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
•Do not overfill the coolant bottle.
•Check coolant freeze point in the system.
•If frequent coolant additions are required, or if the
level in the recovery bottle does not drop when the
engine cools, the cooling system should be pressure
tested for leaks.
•Maintain coolant concentration of a minimum of 50%
ethylene glycol and high quality water with recom-
mended antifreeze for proper corrosion protection of
your engine cooling system that contains aluminum
components.
•Make sure that the radiator and coolant bottle hoses
are not kinked or obstructed.
•Keep the front of the radiator and air conditioning
condenser clean.
•Do not change the thermostat for summer or winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory engine cooling performance,
poor gas mileage, and increased emissions.
Hoses and Vacuum/Vapor Harnesses
Inspect surfaces of hoses and nylon tubing for evidence
of heat and mechanical damage. Hard or soft spots,
brittle rubber, cracking, checking, tears, cuts, abrasions,
and excessive swelling indicate deterioration of the rub-
ber.
MAINTAINING YOUR VEHICLE 191
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Miles 93,000 96,000 99,000 100,000 102,000 105,000
(Kilometers) (149 000) (154 000) (158 000) (160 000) (163 000) (168 000)
Change engine oil and engine oil filter. X X X X X
Inspect theair cleaner filterand replace if re-
quired.*XXX X
Replace theair cleaner filter.X
Inspect the front and rear brake linings and
rotors.X
Flush and replace the engine coolant. X
Replace theengine timing belt(Federal Emis-
sions).X
Replace theengine timing belt(California
Emissions).X
Replace thespark plugs.X
Adjust the drive belt tension.X
Change the differential fluid. X
* This maintenance is recommended by the manufacture
to the owner but is not required to maintain the emis-
sions warranty.
‡ This maintenance is not required if previously replaced.Inspection and service should also be performed anytime
a malfunction is observed or suspected. Retain all re-
ceipts.
SCHEDULE “B” 221
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Miles 78,000 84,000 90,000 96,000 102,000
(Kilometers) (125 000) (134 000) (144 000) (154 000) (163 000)
[Months] [78] [84] [90] [96] [102]
Change engine oil and engine oil filter. X X X X X
Inspect theair cleaner filterand replace if re-
quired.*XX XX
Replace theair cleaner filter.*X
Adjust the drive belt tension. X
Inspect the front and rear brake linings and rotors. X
Replace thespark plugs.X
Check and replace, if necessary, thePCV valve.*‡ X
Replace theengine timing belt(Federal Emissions
equipped vehicles only).X
Replace theengine timing belt(California Emis-
sions equipped vehicles only).X
Flush and replace the engine coolant at 60 months
or 100,000 miles.X
* This maintenance is recommended by the manufacture
to the owner but is not required to maintain the emis-
sions warranty.
‡ This maintenance is not required if previously replaced.Inspection and service should also be performed anytime
a malfunction is observed or suspected. Retain all re-
ceipts.
224 SCHEDULE “A”
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