Important Emission Control Information; Preparing Your Vehicle For Inspection/Maintenance Testing - Ford F150 1997 Owner's Manual

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Maintenance and care
Important emission control
information
By law, anyone who manufacturers,
repairs, services, sells, leases,
trades vehicles or supervises a
fleet of vehicles is not permitted to
intentionally remove an emission
control device or prevent it from
working.
Do not make any unauthorized
changes to the vehicle or engine.
Changes that cause more
unburned fuel to reach the exhaust
system can increase the
temperature of the engine or
exhaust system.
Preparing your vehicle for
inspection/maintenance testing
In some localities it may become a
legal requirement to pass an
Inspection/Maintenance test of the
on-board diagnostic (OBDII)
system. If the vehicle's powertrain
system or battery has just been
serviced, the OBD II system is
reset to a "not ready for I/M
testing condition." To ready the
OBD II system for I/M testing, the
law specifies that additional mixed
city and highway driving is
necessary to complete the check of
the OBD II system.
The driving modes required to
reach the ready condition consist
of a minimum of 30 minutes of city
and highway driving as described
below:
196

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