1998 CADILLAC DEVILLE check engine

Downloaded from www.Manualslib.com manuals search engine 4. With the coolant surge tank pressure cap off, start the
engine and let it run until
you can feel the upper
radiator hose getting hot. Watch out for the engine
cooling fans.
By this time, the coolant level inside the coolant
surge tank may be lower.
If the level is lower, add
more
of the proper mixture to the coolant surge tank
until the level reaches about
2.5 inches (6.4 cm)
below
the base of the filler neck.
5. Then replace the pressure cap. Be sure the arrows
on
the pressure cap line up like this.
Start the engine and allow it to warm up. If the
CHECK
COOLANT LEVEL message does not appear on the
Driver Information Center, coolant
is at the proper fill
level.
If a CHECK COOLANT LEVEL message does
appear, repeat Steps
1 through 3 or see your dealer.

Downloaded from www.Manualslib.com manuals search engine The compact spare is for temporary use only. Replace
the compact spare tire with a full-size tire as soon as you
can. See the storage instructions label to replace your
compact spare into your trunk properly.
I RETAINER --
Compact Spare Tire
Although the compact spare tire was fully inflated
when your vehicle was new, it can
lose air after a time.
Check the inflation pressure regularly. It should be
60 psi (420 Wa).
After installing the compact spare on your vehicle,
you should stop as soon as possible and make sure
your spare tire is correctly inflated. The compact spare is made to perform well at speeds up to
65 mph
(105 km/h) for distances up to 3,000 miles (5 000 km),
so you can finish your trip and have your full-size tire
repaired or replaced where you want. Of course, it’s best
to replace your spare with a full-size tire
as soon as you
can. Your
spare will last longer and be in good shape in
case you need it again.
5-34

Downloaded from www.Manualslib.com manuals search engine &&* -%%-,
Section 6 Service and Appearance Care
Here you will find information about the care of your vehicle. This section begins with service and fuel informa\
tion,
and then it shows how to check important fluid and lubricant levels. There is also techn\
ical information about your
vehicle, and a part devoted to its appearance care.
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Service
Fuel
Fuels in Foreign Countries Filling Your Tank
Filling a Portable Fuel Container
Checking Things Under the Hood
Engine Oil
Air Cleaner
Automatic Transaxle Fluid
Engine Coolant
Windshield Washer Fluid
Brakes
Battery
Bulb Replacement
Windshield Wiper Blade Replacement Headlamp Aiming 6-4
1
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6-66
6-66
6-67
6-67 Tires
Appearance Care
Cleaning the Inside of Your Vehicle
Cleaning the Outside
of Your Vehicle
Cleaning Aluminum or Chrome Wheels
(If Equipped)
Underbody Maintenance
Chemical Paint Spotting
Appearance Care Materials Chart
Vehicle Identification Number (VIN)
Electrical System Replacement Bulbs
Capacities and Specifications
Air Conditioning Refrigerants
Normal Maintenance Replacement
Parts

Downloaded from www.Manualslib.com manuals search engine You can be injured and your vehicle could be
damaged
if you try to do service work on a
vehicle without knowing enough about it.
0 Be sure you have suffkient knowledge,
experience, the proper replacement parts
and tools before you attempt any vehicle
maintenance task.
Be sure to use the proper nuts, bolts and
other fasteners. “English” and “metric”
fasteners can be easily confused.
If you use
the wrong fasteners, parts can later break
or
fall off. You could be hurt.
Adding Equipment to the Outside of
Your Vehicle
Things you might add to the outside of your vehicle can
affect
the airflow around it. This may cause wind noise
and
affect windshield washer performance. Check with
your dealer before adding equipment to the outside
of
your vehicle.
Fuel
Use premium udeaded gasoline rated at 91 octane or
higher for best performance. You may use middle grade
or regular unleaded gasolines, but your vehicle may not
accelerate as well.
At a minimum, the gasoline you use should meet
specifications ASTM D4814 in the United States and
CGSB
3.5-M93 in Canada. Improved gasoline
specifications have been developed by the American
Automobile Manufacturers Association
(AAMA) for
better vehicle performance and engine protection. Gasolines meeting the AAMA specification could
provide improved driveability and emission control
system protection compared to other gasolines.
Be sure the posted octane for premium is at 1,east 91 (at
least 89 for middle grade and 87 for regular).
If the
octane is less than 87, you may get a heavy knocking
noise when you drive.
If it’s bqd enough, it can damage
your engine.
If you’re using fuel rated at the recommended octane or
higher and you hear heavy knocking, your engine needs
service. But don’t worry if you hear a little pinging
noise when you’re accelerating or driving up a
hill.
That’s normal, and you don’t have to buy a higher
6-3

Downloaded from www.Manualslib.com manuals search engine octane fuel to get rid of pinging. It's the heavy, constant
knock that means you have a problem.
If your vehicle is certified to meet California Emission
Standards (indicated on the underhood emission control
label), it is designed to operate on fuels that meet
California specifications.
If such fuels are not available
in states adopting California emissions standards, your
vehicle will operate satisfactorily on fuels meeting
federal specifications, but emission control system
performance may be affected. The malfunction indicator lamp on your instrument panel may turn
on andor your
vehicle may
fail a smog-check test. If this occurs, return
to your authorized Cadillac dealer for diagnosis to
determine the cause of failure. In the event it is determined that the cause of the condition is the type of
fuels used, repairs may not be covered by your warranty.
Some gasolines that are not reformulated for low
emissions contain an octane-enhancing additive called
methylcyclopentadienyl manganese tricarbonyl (MMT); ask your service station operator whether or not his fuel
contains MMT. General Motors does not recommend the
use .of such gasolines. If fuels containing
MMT are used,
spark plug life may be reduced and your emission
control system performance may be affected. The malfunction indicator lamp on your instrument panel
may turn
on. If this occurs, return to your authorized
Cadillac dealer for service.
To provide cleaner air, all gasolines in the United States are now required to contain additives that will help
prevent deposits from forming in your engine and fuel system, allowing your emission control system to
function properly. Therefore,
you should not have to add
anything to the fuel. In addition, gasolines containing
oxygenates, such as ethers and ethanol, and
reformulated gasolines may be available in your area to
help clean the air. General Motors recommends that you
use these gasolines if they comply with the
specifications described earlier.
NOTICE:
Your vehicle was not designed for fuel that
contains methanol. Don't use it. It can corrode
metal parts in your fuel system and also damage plastic and rubber parts. That damage wouldn't
be covered under your warranty.
6-4

Downloaded from www.Manualslib.com manuals search engine Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard to
find. Never use leaded gasoline or any other fuel not
recommended in the previous text on fuel. Costly repairs
caused by use of improper fuel wouldn’t be covered by
your warranty.
To check on fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you’ll be driving.
You can also write us at the following address for
advice. Just tell us where you’re going and give your
Vehicle Identification Number (VIN).
General Motors Overseas Distribution Corporation
1908 Colonel Sam Drive
Oshawa, Ontario
L1H 8P7
Filling Your Tank
Gasoline vapor is highly flammable. It burns
violently, and that can cause very bad injuries.
Don’t smoke if you’re near gasoline or refueling
your vehicle. Keep sparks, flames and smoking
materials away from gasoline.
6-5

Downloaded from www.Manualslib.com manuals search engine Filling a Portable Fuel Container
-
A CAUTION:
--
Never fill a portable fuel container while it is in
your vehicle, Static electricity discharge from the
container can ignite the gasoline vapor. You can
be badly burned and your vehicle damaged
if this
occurs. To help avoid injury to you and others:
Dispense gasoline only into approved
containers,
Do not fill a container while it is inside a
vehicle, in a vehicle’s trunk, pickup bed or
on any surface other than the ground.
inside
of the fill opening before operating
the nozzle. Contact should be maintained
until the filling
is complete.
0 Bring the fill nozzle in contact with the
Don’t smoke while pumping gasoline.
Checking Things Under the Hood
An electric fan under the hood can start up and
injure you even when the engine
is not running.
Keep hands, clothing and tools
away from any
underhood electric fan.
Things that burn can get on hot engine parts and
start a fire. These include liquids like gasoline,
oil, coolant, brake
fluid, windshield washer and
other
fluids, and plastic or rubber. You or others
could be burned. Be careful not to drop or spill
things that will burn onto a hot engine.
6-8

Downloaded from www.Manualslib.com manuals search engine Underhood Lamp
Turn the parking lamps on to operate the underhood
lamp. The underhood lamp will come on when the
ho0.d
is opened.
Engine Oil
~MIUM UNLEADED - -
FUEL ONLY Dg Dg Dg MZ TRIP ; 4 4.
HHBHHHrn
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A CHECK OIL LEVEL message will appear when the
engine oil is approximately
1 quart (1 L) low. If the
' message is displayed, check the dipstick level and-add
oil as needed.
It's a good idea to check your engine oil every time you
get fuel. In order to get an accurate reading, the oil must
be
warm and the vehicle must be on level ground.
The engine
oil dipstick is
located behind the radiator
on the driver's side of the
engine. The black handle
'says
ENGINE OIL on it.
Turn off the engine .and
give the
oil a few minutes
to drain back into the
oil
pan.' If you don't, the oil
dipstick might not show
the actual'level.
I
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