1998 CADILLAC DEVILLE engine

Downloaded from www.Manualslib.com manuals search engine NOTICE:
If you keep driving your vehicle with this light
on, after a while, your emission controls may not
work
as well, your fuel economy may not be as
good and your engine may not run as smoothly.
This could lead to costly repairs that may not be
covered by your warranty.
This light should come on, as a check to show you it is
working, when the ignition is on and the engine is not
running.
If the light doesn’t come on, have it repaired.
This light will also come on during a malfunction in one
of two ways:
0 Light Flashing -- A misfire condition has been
detected. A misfire increases vehicle emissions and
may damage the emission control system on your
vehicle. Dealer or qualified service center diagnosis and service may be required.
Light On Steady -- An emission control system
malfunction has been detected on your vehicle.
Dealer or qualified service center diagnosis and service may be required.
If the Light Is Flashing
The following may prevent more serious damage to
your vehicle:
Reducing vehicle speed.
Avoiding hard accelerations.
Avoiding steep uphill grades.
0 If you are towing a trailer, reduce the amount of
cargo being hauled
as soon as it is possible.
If the light stops flashing and remains on steady, see “If
the Light
Is On Steady’’ following.
If the light continues to flash, when it is safe to do
so,
stop the vehicle. Find a safe place to park your vehicle.
Turn the key off, wait at least
10 seconds and restart the
engine. If the light remains
on steady, see “If the Light
Is On Steady’’ following. If the light is still flashing,
follow the previous steps, and drive the vehicle to your
dealer or qualified service center for service.
2-74

Downloaded from www.Manualslib.com manuals search engine If the Light Is On Steady Have you recentIy changed brands of fuel?
You may be able to correct the emission system
malfunction by considering the following:
Did you recently put fuel into your vehicle?
If
so, reinstall the fuel cap, making sure to fully install
the cap. The diagnostic system can determine if the fuel
cap has been left
off or improperly installed. A loose or
missing fuel cap will allow fuel to evaporate into the
atmosphere.
A few driving trips with the cap properly
installed should turn the light
off.
Did you just drive through a deep puddle of water?
If so, your electrical system may be wet. The condition
will usually be corrected when the electrical system
dries out. A few driving trips should turn the light off.
Are you low on fuel?
As your engine starts to run out of fuel, your engine may
not run as efficiently as designed since small amounts of
air are sucked into the fuel line causing a misfire. The
system can detect this. Adding fuel should correct this
condition. Make sure to install the fuel cap properly.
It
will take a few driving trips to turn the light off. If
so, be sure to fuel your vehicle with quality fuel (see
“Fuel” in the Index). Poor fuel quality will cause your \
engine not to run as efficiently as designed. You may
notice this as stalling after start-up, stalling when you
put the vehicle into gear, misfiring, hesitation on
acceleration or stumbling on acceleration. (These
conditions may
go away once the engine is warmed up.)
This will be detected by the system and cause the light
to turn on.
If you experience one or more of these conditions,
change the fuel brand you use.
It will require at least one
full tank of the proper fuel to turn the light off.
If none of the above steps have made the light turn
off,
have your dealer or qualified service center check the
vehicle. Your dealer has the proper test equipment and
diagnostic tools to fix any mechanical
or electrical
problems that may have developed.
2-75

Downloaded from www.Manualslib.com manuals search engine Oil Pressure Light 1
This light tells you if there
could be a problem with
your engine oil pressure.
The light goes on when you
turn your key to RUN or
START. It goes off once you start your engine. That’s a
check to be sure the light works.
If it doesn’t come on,
be sure
to have it fixed so it will be there to warn you if
something goes wrong.
When the light
comes on and stays on, it means
that oil isn’t flowing through your engine properly. You
could be low
on oil and you might have some other
system problem.
/!1 CAUTION:
Don’t keep driving if the oil pressure is low. If
you do, your engine can become so hot that it
catches fire. You or others could be burned.
Check your oil as soon as possible and have your
vehicle serviced.
NOTICE:
Damage to your engine from neglected oil
problems can be costly and
is not covered by
your warranty.
2-76

Downloaded from www.Manualslib.com manuals search engine Fuel Gage
PREMIUM U.NLEADED FUEL
ONLY
1
Analog Cluster Digital Cluster
The fuel gage shows approximately how much fuel is in
the tank. It works only when the ignition is
in RUN.
On the digital cluster, if the fuel level is within
approximately 2 gallons (7.6 L) of being full, the letter F is
shown. If the fuel level is less than approximately
3 gallons (1 1.4 L) from being empty, the letter E is shown.
If the fuel supply gets down to approximately 3 gallons
(11.4 L), the number “3” will be displayed on the fuel
gage, and the
FUEL LEVEL LOW message will appear
on the Driver Information Center
@IC). (On the analog
fuel gage, the
FUEL LEVEL LOW message will
also appear.)
Here are a few concerns some owners have had about
the fuel gage. All
of these situations are normal and do
not indicate that anything is wrong with the fuel gage:
At the gas station the gas pump shuts off before the
gage reads
E
It takes more (or less) gas to fill the tank than the
gage said. For example, the gage read
8 GALLONS
(30 L), but it took more (or less) than the tank’s
remaining capacity to fill it.
speed up.
The gage may change when you turn, stop or
2-77

Downloaded from www.Manualslib.com manuals search engine Fuel Data Panel Press the AVG button to display the average
mile-per-gallon (AVG MPG).
You can also display it in
metric units by pressing the ENG MET button.
-1
When AVG MPG is selected, the total distance is
divided by the total fuel used.
When the INST button (Instantaneous Fuel Economy) is
selected, you will see what the fuel economy is at that
instant. The computer takes a new reading twice every
second. It will show economy up to
70 miles-per-gallon
(or
2 L per 100 km).
To reset the average fuel economy, press the INFORMATION button until the AVG MPG is
displayed on the Driver Information Center (DIC). Press and hold the
RESET button until both the fuel data
center and DIC display reads
0.0.
Digital Cluster
For vehicles equipped with an analog cluster (not shown), fuel data can be obtained by pressing the
INFO button. See “Analog Control Buttons’’ later
in this section.
The fuel data panel tells you all you need to know about
the fuel economy and how far you can travel with the
he1 remaining. The
RANGE display shows how far the computer thinks
you can travel with the fuel that is in the tank. The
computer does not know what driving conditions will be
like for the rest of your trip,
so the range is estimated
based on the recent fuel economy. Therefore,
the range
reading may change as your driving habits change. Going from city to highway driving may increase the
range reading.
If the range display shows
LO, you should stop for fuel
as soon as possible.
2-78.

Downloaded from www.Manualslib.com manuals search engine Driver Information Center (DIC)
This display gives you the status of many of your
vehicle’s systems. The DIC is also used to display driver
personalization features and warningktatus messages.
Digital Control Buttons (DeVille and
DeVille d’Elegance Only)
DISPLAY ON/OFF: Pressing this button will turn off
the Driver Information Center (DIC), Electronic Climate
Control (ECC), fuel data center, the fuel gage, trip
odometer and odometer. While the displays are off,
pressing the INFORMATION button will only turn on
the DIC. If the TRIP button is pressed or the fuel level
falls below
4 gallons (15.2 L), all of the displays will
come back on.
ENGMET: You can change the display from English
(miles) to metric (kilometers) by pressing this button.
The same button also changes other readings (like
temperature, fuel and odometer).
TRIP: By using this button, you can tell how far you’ve
gone since you last set the TRIP back to zero. To reset,
press and hold the button until zeros appear. If your
vehicle is domestic, the trip odometer will return to zero
after 999.9 miles
(1 609 km). If your vehicle is
Canadian, the trip odometer will return
to zero after 1
999.9 km (1,242 miles).
INFORMATION: Pressing this button repeatedly will
display the MPG AVG,
GAL FUEL USED, AVG MPH,
ENGINE RPM, BATTERY VOLTS, COOLANT TEMP
and OIL LIFE LEFT.

Downloaded from www.Manualslib.com manuals search engine TIMER: This feature is like a stopwatch, in that
you
can clock the time it takes to get from one point
to another.
To operate, press the TIMER button until TIMER
OFF
0O:OO:OO is displayed on the Driver Information Center
@IC). Each of the fields for the hours, minutes and
seconds are two numeric digits.
Once TIMER
OFF 0O:OO:OO is displayed, press the
TIMER button to start the timing feature. Press the
TIMER button again to stop it.
If you will be starting
and stopping your vehicle
-- during a trip for
instance
-- the TIMER feature will automatically start
timing where it left
off when you last stopped. To reset
it, press and hold the RESET button until the display
reads TIMER
0O:OO:OO. Press the INFORMATION
button
to exit from the TIMER function.
RESET Pressing this button will reset the MPG AVG,
GAL FUEL USED, AVG
MPH and OIL LIFE LEFT.
Pressing RESET when a non-resettable display appears
will cause a “recall” mode to occur. When this happens,
all Driver Information Center (DIC) warning messages
that have been displayed since the ignition key was
turned to
RUN will redisplay. If no messages were
displayed, a MONITORED SYSTEMS
OK message
will appear.
MPG AVG (Reset): Press the INFORMATION button
to display the MPG AVG (Average Fuel Economy), then
press and hold the RESET button until
0.0 MPG AVG
is displayed.
GAL FUEL USED (Reset): Press the INFORMATION
button to display the GAL FUEL
USED on the Driver
Information Center (DIC), then press and hold the
RESET button until
0.0 GAL FUEL USED is displayed.
AVG MPH (Reset): Press the INFORMATION
button to display the AVG MPH (Average Speed), then
press and hold the RESET button until
0.0 AVG MPH
is displayed.
OIL LIFE LEFT (Reset): Press the INFORMATION
button
to display the OIL LIFE LEFT, then press and
hold the RESET button until
100% OIL LIFE LEFT is
displayed. (This only needs to be reset after you have
had the oil changed.)
2-80

Downloaded from www.Manualslib.com manuals search engine Analog Control Buttons (DeVille Concours Only)
INFO RESET Pressing this button will reset the MPG
AVG, GAL FUEL USED, AVG MPH and OIL LIFE
LEFT. Pressing INFO RESET when a non-resettable
display appears will cause a “recall” mode to occur.
When this happens, all Driver Information Center (DIC) warning messages that have been displayed since the
ignition key was turned to RUN will redisplay. If no
messages were displayed,
a MONITORED SYSTEMS
OK message will appear.
MPG AVG (Reset): Press the INFO button to display
the MPG AVG (Average Fuel Economy), then press and
hold the INFO RESET button until
0.0 MPG AVG
is displayed.
GAL FUEL USED (Reset): Press the INFO button to
display the GAL FUEL
USED on the Driver
Information Center (DIC), then press and hold the
INFO
RESET button until 0.0 GAL FUEL USED is displayed.
AVG MPH (Reset): Press the INFO button to display
the AVG MPH (Average Speed), then press and hold the
INFO RESET button until
0.0 AVG MPH is displayed.
OIL LIFE LEFT (Reset): Press the INFO button to
display the OIL LIFE LEFT, then press and hold the
INFO RESET button until
100% OIL LIFE LEFT is
displayed. (This only needs to be reset after you have
had the oil changed.)
TRIP RESET By using this button, you can tell how
far you’ve gone since you last set the
TRIP RESET back
to zero. To reset, press and hold the button until zeros
appear. If your vehicle is domestic, the trip odometer
will return to zero after 999.9 miles
(1 609 km). If your
vehicle is Canadian, the trip odometer will return to zero
after
1 999.9 km (1,242 miles).
INFO: Pressing this button repeatedly will display the
RANGE, MPG AVG, MPG INST, GAL FUEL USED,
MPH, AVG MPH, BATTERY VOLTS and OIL
LIFE LEFT.