MAINTAINING YOUR VEHICLE
CONTENTS
6.1L Engine Compartment................348
Onboard Diagnostic System — OBD II........349
▫Loose Fuel Filler Cap..................349
Emissions Inspection And Maintenance
Programs............................350
Replacement Parts......................351
Authorized Dealer Service................352
Maintenance Procedures..................352
▫Engine Oil..........................353▫Engine Oil Filter......................355
▫Drive Belts — Check Condition And Tension . . 355
▫Spark Plugs.........................356
▫Engine Air Cleaner Filter................356
▫Fuel Filter..........................357
▫Catalytic Converter....................357
▫Maintenance-Free Battery................358
▫Air Conditioner Maintenance.............360
▫A/C Air Filter — If Equipped............361
7
Inspect belts for evidence of cuts, cracks, glazing, or
frayed cords and replace if there is indication of damage
that could result in belt failure. Also, check belt routing to
make sure there is no interference between the belts and
other engine components. See your authorized dealer for
service.
Spark Plugs
Spark plugs must fire properly to assure engine perfor-
mance and emissions control. New plugs should be
installed at the specified mileage. The entire set should be
replaced if there is any malfunction due to a faulty spark
plug. Malfunctioning spark plugs can damage the cata-
lytic converter. Refer to “Fluids, Lubricants, and Genuine
Parts” in this section for the proper type of spark plug for
use in your vehicle.
Engine Air Cleaner Filter
Refer to the Maintenance Schedule in Section 8 for engine
air cleaner filter maintenance intervals.
NOTE:Be sure to follow the “dusty or off-road condi-
tions” maintenance interval if applicable.
WARNING!
The air induction system (air cleaner, hoses, etc) can
provide a measure of protection in the case of engine
backfire. Do not remove the air induction system (air
cleaner, hoses, etc) 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 induction system (air cleaner,
hoses, etc) removed. Failure to do so can result in
serious personal injury.
356 MAINTAINING YOUR VEHICLE
Perform Maintenance Every(Where time and mileage
are listed, follow the interval that occurs first.)
Maintenance Items Miles Kilometers or Months
Inspect and replace PCV valve if necessary.90,000 150 000 90
Flush and replace the engine coolant. 102,000 170 000 60
Replace the spark plugs.102,000 170 000 102
Change the automatic transmission fluid and filter. 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 405
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