Chrysler PT Cruiser Convertible (2005 year). Instruction — part 16

2.4L TURBO ENGINE COMPARTMENT

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2.4L ENGINE COMPARTMENT

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ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors
the performance of the emissions, engine, and automatic
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions well within current government regulations.

If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light.” It will
also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be drivable and not
need towing, see your dealer for service as soon as
possible.

CAUTION!

• Prolonged driving with the “Malfunction Indica-

tor 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 emissions tests can be per-
formed.

• If the “Malfunction Indicator Light” is flashing

while the engine is running, severe catalytic con-
verter damage and power loss will soon occur.
Immediate service is required.

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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 may not be 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:

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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 is not ready and you should not
proceed 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
is ready and you can proceed to the I/M station.

If your OBD system is not 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 Mopar

威 parts for normal/scheduled

maintenance and repairs is highly recommended to in-
sure the designed performance. Damage or failures
caused by the use of non-Mopar

威 parts 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 Instructions are available which
include detailed service information for your vehicle.
Refer to these instructions before attempting any procedure
yourself.

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NOTE:

Intentional tampering with emissions control

systems can result in civil penalties being assessed
against you.

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 proper equipment.
If you have any doubt about your ability to perform
a service job, take your vehicle to a competent
mechanic.

MAINTENANCE PROCEDURES
The pages that follow contain the required maintenance
services determined by the engineers who designed your
vehicle.

Besides the maintenance items for which there are fixed
maintenance intervals, there are other items that should
operate satisfactorily without periodic maintenance.
However, if a malfunction of these items does occur, it
could adversely affect the engine or vehicle performance.
These items should be inspected if a malfunction is
observed or suspected.

Engine Oil

Checking Oil Level
To assure proper engine lubrication, the engine oil must
be maintained at the correct level. Check the oil level at
regular intervals, such as every fuel stop.

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The best time to check the engine oil level is about 5
minutes after a fully warmed engine is shut off or before
starting the engine after it has sat overnight.

Checking the oil while the vehicle is on level ground, will
improve the accuracy of the oil level readings. Maintain
the oil level between the MIN and MAX markings on the

dipstick. Adding one quart of oil when the reading is at
the MIN mark will result in a MAX reading on these
engines.

CAUTION!

Overfilling the crankcase as indicated by an oil level
above the “Max” mark on the engine oil dipstick
will cause oil aeration, which can lead to loss of oil
pressure and an increase in oil temperature. This
could damage your engine.

Change Engine Oil
Road conditions and your kind of driving affects the
interval at which your oil should be changed. Check the
following list to decide if any apply to you.

• Day and night temperatures are below 32°F (0°C).
• Stop and Go driving.

Engine Oil Dipstick

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• Extensive engine idling.
• Driving in dusty conditions.
• Short trips of less than 10 miles (16 km).
• More than 50% of your driving is at sustained high

speeds during hot weather, above 90°F (32°C).

• Trailer towing.
• Taxi, Police or delivery service (commercial service).
• Off-Road or desert operation.
• If equipped for and operating with E-85 (ethanol)

fuel.

NOTE:

If ANY of these apply to you then change your

engine oil every 3,000 miles (5 000 km) or 3 months,
whichever comes first, and follow schedule “B—All
Engines” of the

⬙Maintenance Schedules⬙ section of this

instruction.

If none of these apply to you, and your vehicle is
equipped with a Non–Turbo Charged Engine then
change your engine oil at every interval shown on
schedule “A”—NON TURBO in the maintenance sched-
ule section of this instruction.

If none of these apply to you, and your vehicle is
equipped with a Turbo Charged Engine change your
engine oil at every interval shown on schedule
“A”—TURBO in the maintenance schedule section of this
instruction.

NOTE:

Under no circumstances should oil change in-

tervals exceed 6000 miles (10 000 km) or 6 months
whichever comes first.

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Engine Oil Selection
For best performance and maximum protection under all
types of operating conditions, the manufacturer only
recommends engine oils that are API certified and meet
the requirements of DaimlerChrysler Material Standard
MS-6395.

American Petroleum Institute (API) Engine Oil
Identification Symbol

This symbol means that the oil has
been certified by the American
Petroleum Institute (API). The
manufacturer only recommends
API Certified engine oils.

Engine Oil Viscosity (SAE Grade)
SAE 5W-30 engine oil is recommended for all operating
temperatures. This engine oil improves low tempera-
ture starting and vehicle fuel economy. Refer to your
engine oil filler cap for the recommended engine oil
viscosity for your vehicle.

For information on engine oil filler cap location, see the
Engine Compartment illustration in this section.

Lubricants which do not have both, the engine oil certi-
fication mark and the correct SAE viscosity grade num-
ber should not be used.

Synthetic Engine Oils
There are a number of engine oils being promoted as
either synthetic or semi-synthetic. If you chose to use
such a product, use only those oils that are American
Petroleum Institute (API) Certified and have the recom-
mended SAE viscosity grade. Follow the maintenance
schedule that describes your driving type.

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Materials Added To Engine Oils
The manufacture strongly recommends against the addi-
tion of any additives (other than leak detection dyes) to
the engine oil. Engine oil is an engineered product and
it’s performance may be impaired by supplemental ad-
ditives.

Disposing of Used Engine Oil
Care should be taken in disposing of used engine oil from
your vehicle. Used oil, indiscriminately discarded, can
present a problem to the environment. Contact your
dealer, service station, or governmental agency for advice
on how and where used oil can be safely discarded in
your area.

Engine Oil Filter
The engine oil filter should be replaced at every engine
oil change.

Engine Oil Filter Selection
All of this manufacturers 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. Mopar Engine Oil Filters are high
quality oil filters and are recommended.

Drive Belts — Check Condition and Tension
At the mileage shown in the maintenance schedules,
check all drive belts for condition and proper tension.
Improper belt tension can cause belt slippage and failure.

Inspect the drive belts for evidence of cuts, cracks, or
glazing and replace them if there is any sign of damage
which could result in belt failure. If adjustment is re-
quired, see your authorized dealer for service.

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Special tools are required to properly measure tension
and to restore belt tension to factory specifications. Also,
check belt routing to make sure there is no interference
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 specified mileage. The entire set should be
replaced if there is any malfunction due to a faulty spark
plug. Refer to the Engine data Label located under the
hood for the proper type of spark plug for use in your
vehicle.

Ignition Wiring System
The ignition cables should be kept clean and properly
connected. Terminals should be fully seated. Cracked,
damaged, or faulty cables should be replaced.

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.

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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 the
vehicle.

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 manufacturers specifica-
tions, should be obtained immediately.

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To minimize the possibility of catalyst damage:
• Do not shut off the engine or interrupt the ignition

when the transaxle 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 for prolonged period.

Engine Timing Belt
Replace the engine timing belt at the intervals described
in the appropriate maintenance schedule.

Crankcase Emission Control System
Proper operation of this system depends on freedom
from sticking or plugging due to deposits. As vehicle
mileage builds up, the PCV valve and passages may
accumulate deposits. If a valve is not working properly,
replace it with a new valve. DO NOT ATTEMPT TO
CLEAN THE OLD PCV VALVE!

Check ventilation hose for indication of damage or
plugging deposits. Replace if necessary.

Fuel Filter
A plugged fuel filter can cause hard starting or limit the
speed at which a vehicle can be driven. Should an
excessive amount of dirt accumulate in the fuel tank,
frequent filter replacement may be necessary. The fuel
filters are located inside the fuel tank. See your dealer for
service.

Air Cleaner Element (Filter)
Under normal driving conditions, replace the filter at the
intervals shown on Schedule “A”. If, however, you drive
the vehicle frequently under dusty or severe conditions,
the filter element should be inspected periodically and
replaced if necessary at the intervals shown on Schedule
“B”.

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NOTE:

For vehicles with a Turbo engine, a small

amount of oil accumulation in the air cleaner box is
normal. The amount will depend on driving style. The air
cleaner box should be cleaned out and a new make-up-
air filter element should be installed during the normal
air filter maintenance procedure.

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.

Maintenance-Free Battery
You will never have to add water, nor is periodic main-
tenance required.

CAUTION!

When servicing the battery, always reinstall the
battery thermowrap. The thermowrap provides bat-
tery heat protection and will extend overall battery
life. Failure to reinstall the thermowrap can result in
evaporative loss of the battery fluid.

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WARNING!

Battery fluid is a corrosive acid solution and can
burn or even blind you. Don’t allow battery fluid to
contact your eyes, skin or clothing. Don’t lean over a
battery when attaching clamps. If acid splashes in
eyes or on skin, flush the area immediately with
large amounts of water.

Battery gas is flammable and explosive. Keep flame
or sparks away from the battery. Don’t use a booster
battery or any other booster source with an output
greater than 12 volts. Don’t allow cable clamps to
touch each other.

Battery posts, terminals and related accessories con-
tain lead and lead compounds. Wash hands after
handling.

CAUTION!

It is essential when replacing the cables on the
battery that the positive cable is attached to the
positive post and the negative cable is attached to the
negative post. Battery posts are marked positive (+)
and negative (-) and identified on the battery case.
Cable clamps should be tight on the terminal posts
and free of corrosion. Apply grease to posts and
clamps after tightening.

If a “fast charger” is used while the battery is in the
vehicle, disconnect both vehicle battery cables be-
fore connecting the charger to battery. Do not use a
“fast charger” to provide starting voltage as battery
damage can result.

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Air Conditioner Maintenance
For best possible performance, your air conditioner
should be checked and serviced by an Authorized Dealer
at the start of each warm season. This service should
include cleaning of the condenser fins and a performance
test. Drive belt tension should also be checked at this
time.

WARNING!

• Use only refrigerants and compressor lubricants

approved by the manufacturer for your air condi-
tioning system. Some unapproved refrigerants are
flammable and can explode, injuring you. Other
unapproved refrigerants or lubricants can cause
the system to fail, requiring costly repairs. Refer
to Section 3 of the Warranty Information book for
further warranty information.

• The air conditioning system contains refrigerant

under high pressure. To avoid risk of personal
injury or damage to the system, adding refrigerant
or any repair requiring lines to be disconnected
should be done by an experienced repairman.

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