Ford 1999 Taurus Owner's Manual page 257

WARNING
Do not park, idle, or drive your vehicle
in dry grass or other dry ground cover.
The emission system heats up the
engine compartment and exhaust
system, which can start a fire.
Watch for fluid leaks, strange odors, smoke, loss of
oil pressure, the charge warning light, the check
engine light, or the temperature warning light.
These sometimes indicate that the emission system
is not working properly.
Do not make any unauthorized changes to your
vehicle or engine. Changes that cause more
unburned fuel to reach the exhaust system can
increase the temperature of the engine or exhaust
system.
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By law, anyone who manufactures, 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.
In some of the United States and in Canada,
vehicle owners may be liable if their emission
control device is removed or is prevented from
working.
Do not drive your vehicle if it does not operate
properly. See your dealer if the engine runs on for
more than five seconds after you shut it off or if it
misfires, surges, stalls, or backfires.
Information about your vehicle's emission control
system is on the Vehicle Emission Control
Information decal located on or near the engine.
This decal identifies engine displacement and gives
some tune-up specifications.