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EMISSIONS CONTROL SYSTEM MAINTENANCE
The Scheduled Maintenance services listed in bold type
must be done at the times or mileages specified to ensure
the continued proper functioning of the emission control
system. These, and all other maintenance services in-
cluded in this manual, should be done to provide best
vehicle performance and reliability. More frequent main-
tenance may be needed for vehicles in severe operating
conditions, such as dusty areas and very short trip
Inspection and service should also be done any time a
malfunction is suspected.
NOTE: Maintenance, replacement, or repair of the emis-
sions control devices and systems on your vehicle may be
performed by any automotive repair establishment or
individual using any automotive part that has been
certified pursuant to U.S. EPA or, in the State of Califor-
nia, California Air Resources Board regulations.
There are three maintenance schedules that show re-
quired service for your vehicle.
First is Schedule “B”—ALL ENGINES. It is for vehicles
that are operated under the conditions that are listed
below and at the beginning of the schedule.
Day and night temperatures are below 32° F (0° C).
Stop and go driving.
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).
434 MAINTENANCE SCHEDULES