OBD port CHEVROLET CAVALIER 1995 3.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine NOTICE:
If you keep driving your vehicle with this light
on, after a while the emission controls won’t
work as well, your fuel economy won’t
be as good
and your engine may not run as smoothly. This
could lead to costly repairs not covered by your
warranty.
If Your Vehicle
Is Equipped with OBD I1
(2.3L Code D Engine Only)
Certain vehicles are equipped with a new emission
diagnostic system. You can tell whether your vehicle has
this system by reading your tune-up label located under
the hood. If the label says
“OBD 11” on it. the following
instructions apply.
Your Chevrolet
is equipped with an onboard computer
which monitors operation
of the emission control
system. This system
is called OBD I1 (On-Board
Diagnostics
-- Second Generation) and is intended to
assure that emissions are at acceptable levels for the life
of the vehicle, helping to produce a cleaner
environment. The
CHECK ENGINE light comes on to
indicate when service is require.d. Malfunctions often
will be indicated by the system before any problem is apparent,
which may prevent more serious damage
tc,
your vehicle. This system is also designed to assist your
service technician
in correctly diagnosing any
malfunction.
The
CHECK ENGINE light should come on, as a check
to show
you it is working, when the ignition is on and
the engine is
not running. This light will also come on
during a malfunction in one of two ways:
Light On Steady: This indicates a system
malfunction has been detected. Drive the vehicle
to
the dealer for service at your first opportunity.
Light Flashing: This indicates a misfire has been
detected which may damage the emission control
system. The damage may be reduced by Iowering the
vehicle speed, reducing the amount
of cargo being
hauled or trailered, avoiding hard acceleration,
or by
avoiding steep uphill grades.
If these actions are
effective,
the light will stop flashing and remain on
steady. Drive the vehicle to a dealer for service. If
the light continues to flash, stop the vehicle. Wait for
a steady light to come on, then drive the vehicle to
a
dealer for service.
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