1998 CHEVROLET ASTRO fuel pressure

Downloaded from www.Manualslib.com manuals search engine Vehicle Symbols
These are some of the symbols you may find on your vehicle.
For example,
these symbols
are used on an
original battery:
POSSIBLE A
CAUTION
INJURY
PROTECT EYES BY
SHIELDING
CAUSTIC
BURNS
AVOID
SPARKS
OR
FLAMES
SPARK
OR ,\I/,
COULD FLAME
EXPLODE BATTERY
These symbols
are important
for you and
your passengers
whenever your
vehicle
is
driven:
DOOR LOCK
UNLOCK
FASTEN SEAT
BELTS
POWER
WINDOW
These symbols have to do with
your lamps:
SIGNALS e
TURN
FOG LAMPS
$0
These symbols
are on some
of
your controls:
WINDSHIELD
DEFROSTER
WINDOW
DEFOGGER
VENTILATING FAN
These symbols are used on
warning and
indicator lights:
COOLANT
TEMP
-
CHARGING I-1
BATTERY
SYSTEM
BRAKE
(a)
COOLANT a
ENGINE OIL e,
PRESSURE
ANTI-LOCK
(@)
BRAKES
Here are some
other symbols
you may see:
FUSE -%-
t
LIGHTER
HORN
b
SPEAKER
b
FUEL p3
V

Downloaded from www.Manualslib.com manuals search engine 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.
Oil Pressure Gage
The oil pressure gage shows
the engine oil pressure in
psi (pounds per square inch)
when the engine
is running.
Canadian vehicles indicate pressure
in kPa (kilopascals).
Oil pressure may vary with engine speed, outside
temperature and
oil viscosity, but readings above the
low pressure zone indicate
the normal operating range.
A reading in the low pressure zone may be caused by a
dangerously low oil level or other problems causing
low
oil pressure.
2-64

Downloaded from www.Manualslib.com manuals search engine Here are some things you can check before a trip:
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Windshield Washer Fluid: Is the reservoir full? Are
all windows clean inside and outside?
Wiper Blades: Are they in good shape?
Fuel, Engine Oil, Other Fluids: Have you checked
all levels?
Lamps: Are they all working? Are the lenses clean?
Tires: They are vitally important to a safe,
trouble-free trip.
Is the tread good enough for
long-distance driving? Are the tires
all inflated to the
recommended pressure?
Weather Forecasts: What’s the weather outlook
along your route? Should you delay your trip a short
time
to avoid a major storm system?
Maps: Do you have up-to-date maps?
Highway Hypnosis
Is there actually such a condition as “highway
hypnosis”? Or is
it just plain falling asleep at the wheel?
Call
it highway hypnosis, lack of awareness,
or whatever.
There
is something about an easy stretch of road with
the same scenery, along with the hum
of the tires on the
road, the drone of the engine, and the rush of the wind
against the vehicle that can make
you sleepy. Don’t let it
happen to you!
If it does, your vehicle can leave the
road
in less than a second, and you could crash and
be injured.
What can
you do about highway hypnosis? First, be
aware that it can happen.
Then here are some tips:
0 Make sure your vehicle is well ventilated, with a
comfortably cool interior.
0 Keep your eyes moving. Scan the road ahead and
to the sides. Check your mirrors and your
instruments frequently.
If you get sleepy, pull off the road into a rest, service
or parking area and take
a nap, get some exercise, or
both. For safety, treat drowsiness on
the highway as
an emergency.

Downloaded from www.Manualslib.com manuals search engine Then, shut the engine off and close the window almost
all the way to preserve the heat. Start the engine again
and repeat this only when you feel really uncomfortable
from the cold.
But do it as little as possible. Preserve the
fuel as long as you can. To help keep warm, you can get
out of the vehicle and
do some fairly vigorous exercises
every half hour or
so until help comes.
Loading Your Vehicle
no
GAWR FRT
(SEE dc
RIM COLD TIRE PRESSURE
--
VNERIS MANUAL FOR ADDITIONAL INFORMATION. -I
The CertificatiodTire label in your vehicle will look
similar
to this example. The
Certification/Tire label is found on the rear edge
of
the driver’s door. The label shows the size of your
original tires and the inflation pressures needed to obtain
the gross weight capacity of your vehicle.
This is called the GVWR (Gross Vehicle Weight
Rating). The GVWR includes the weight of the vehicle,
all occupants, fuel, cargo and tongue weight, if pulling
a trailer.
The Certificationnire label also tells you the maximum
weights for the front and rear axles, called the Gross
Axle Weight Rating (GAWR). To find out the actual
loads on your front and rear axles,
you need to go to a
weigh station and weigh your vehicle. Your dealer can
help
you with this. Be sure to spread out your load
equally
on both sides of the centerline.
Never exceed the GVWR for your vehicle, or GAWR
for either the front or rear axle.
And,
if you do have a heavy load, you should spread
it out.
4-26

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 information,
and then it shows how to check important fluid and lubricant levels. There is also technical infc lation about your
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6-29 6-29
6-30
6-3
1
6-35 vehicle,
and a part devoted to its appearance care.
Service
Fuel
Filling Your Tank
Filling a Portable Fuel Container
Checking Things Under the Hood
Engine Oil Engine Cover
Air Cleaner
Automatic Transmission Fluid
All-Wheel Drive
Rear Axle
Engine Coolant
Radiator Pressure Cap
Thermostat
Power Steering Fluid
Windshield Washer Fluid
Brakes
Battery 6-36
6-36
6-42
6-42
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6-5
1
6-53
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6-67
6-68
6-69 Bulb
Replacement
Halogen Bulbs
Windshield Wiper Blade Replacement
Tires
Appearance Care
Cleaning the Inside of Your Vehicle
Cleaning the Built-in Child Restraint
Cleaning the Outside
of Your Vehicle
Cleaning Tires
Finish Damage
Underbody Maintenance
Appearance Care Materials Chart
Vehicle Identification Number (VIN)
Service Parts Identification Label
Electrical System
Capacities and Specifications
Air Conditioning Refrigerants
Normal Maintenance Replacement Parts
6-1

Downloaded from www.Manualslib.com manuals search engine I
I
Lift the hood, release the hood prop from its retainer and
put the hood prop into the slot in the hood.
Before closing the hood, be sure all the filler caps
are on
properly. Then lift the hood to relieve pressure on the
hood prop. Remove the
hood prop from
the slot in the hood and
I return the
Drop to its retainer. 1.L
Then just pull the hood
down and close it firmly.
Engine Oil
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.
6-10

Downloaded from www.Manualslib.com manuals search engine A CAUTION:
Poorly maintained and improperly used tires
are dangerous.
Overloading your tires can cause
overheating as a result of too much friction.
You could have an air-out and a serious
accident. See “Loading Your Vehicle” in
the Index.
0 Underinflated tires pose the same danger as
overloaded tires. The resulting accident
could cause serious injury. Check all tires
frequently to maintain the recommended pressure. Tire pressure should be checked
when your tires are cold.
Overinflated tires are more likely to be cut,
punctured or broken by a sudden
impact
-- such as when you hit a pothole.
Keep tires
at the recommended pressure.
Worn, old tires can cause accidents. If your
tread
is badly worn, or if your tires have
been damaged, replace them.
Inflation -- Tire Pressure
The CertificatiodTire label, which is on the rear edge of
the driver’s door, shows the correct inflation pressures
for your tires when they’re cold. “Cold” means your
vehicle has been sitting for at least three hours or driven
no more than
1 mile (1.6 km).
NOTICE:
I
Don’t let anyone tell you that underinflation or
overinflation is all right. It’s not.
If your tires
don’t have enough air (underinflation), you can
get the following:
0 Too much flexing
0 Too much heat
0 Tire overloading
0 Bad wear
Bad handling
Bad fuel economy.
I
NOTICE: (Continued)
6-43

Downloaded from www.Manualslib.com manuals search engine Fuse/Circuit Breaker Usage
UPFIT-BATT Upfitter Battery Power Stud, Trailer
UPFIT-ACCY Upfitter Accessory Relay
Wiring
Harness
Spare
Fuse Puller*
Spare
Spare
ECM-B
HORN
A/C COMP
RR DEFOG
ENG-I
Fuse/Circuit Breaker Usage
IGN-E
ECM-I
Not used
LIGHTING
Not used
Not used Fuel Pump Relay and Motor, VCM,
Oil Pressure Switch/Sender
Horn Relay and Horn
A/C Enable Relay and Compressor
Heater-A/C Control Selector Switch,
Rear Window Defogger
Oxygen Sensors, Camshaft Position
Sensor, Mass Air Flow Sensor,
Evaporative Emission Canister Purge
Solenoid, Linear EGR Valve
Solenoid, VCM EGR HI BATT
IGN A
IGN B
ABS
NC
RR HTRIAC
Spare A/C
Enable Relay Coil
Fuel Injectors
1-6, Crankshaft
Position Sensor, VCM, Coil Driver
Module (EST)
Park Lamps Fuse, DRL Fuse,
Headlamp and Panel Dimmer Switch
SteeringBecurity Fuse, Courtesy
Fuse, ACSY CB, Stop/Hazard Fuse,
Auxiliary Power Fuse, Cigar Lighter
Fuse, Radio Battery Fuse
Starter Relay, Ignition Switch
Ignition Switch
Electronic Brake Control Module Blower Motor Resistor, Blower
Relay
Auxiliary Heater NC Relay
Not used
*A fuse puller is included
in the underhood electrical
center. You will also find spare fuses.
6-65