radiator cap CHEVROLET ASTRO CARGO VAN 1995 2.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine When you decide it’s safe to lift the hood, here’s what you’ll see:
A. Coolant recovery tank
B. Radiator pressure cap
C. Engine fan
If the coolant inside the coolant recovery tank is boiling, don’t do anything
else until it cools down.
The coolant level should be at
ADD. If it isn’t, you may have a leak in the
radiator hoses, heater hoses, radiator, water pump
or somewhere else in the
cooling system.
NOTICE:
Engine damage from running your engine without coolant isn’t \
covered by your warranty.
If there seems to be no leak, start the engine again. See if the fan speed
increases when idle speed is doubled
by pushing the accelerator pedal down.
If it doesn’t, your vehicle needs service. Turn off the engine.
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Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Radiator
1. You can remove the radiator pressure cap when the cooling system,
including the radiator pressure cap and upper radiator hose, is
no longer
hot. Turn the pressure cap slowly
to the left until it first stops. (Don’t
press down while turning the pressure cap.)
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Downloaded from www.Manualslib.com manuals search engine If you hear a hiss, wait for that to stop. A hiss means there is still Some
pressure left.
2. Then keep turning the pressure cap, but now push down as you turn it.
Remove the pressure cap.
3. Fill the radiator with the proper mix, up to the base of the filler neck.
5-18

Downloaded from www.Manualslib.com manuals search engine I
4. Then fill the coolant recovery tank to ADD.
5. Put the cap back on the coolant recovery tank, but leave the radiator
pressure cap
off.
6. Start the engine and let it run until you can feel the upper radiator hose
getting hot. Watch out for the engine fan.
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Downloaded from www.Manualslib.com manuals search engine 7. By this time the coolant level inside the radiator filler neck may be
lower.
If the level is lower, add more of the proper mix through the
filler neck until the level reaches the base
of the filler neck.
8. Then replace the pressure cap. At any time during this procedure if
coolant begins to flow out of the filler neck, reinstall the pressure cap.
Be sure the arrows on the pressure cap line
up like this.
Engine Fan Noise
This vehicle has a clutched engine cooling fan. When the clutch is engaged,
the fan spins faster to provide more air to cool the engine. In most every day
driving conditions the clutch is not fully engaged. This improves fuel
economy and reduces fan noise. Under heavy vehicle loading, trailer towing
and/or high outside temperatures, the fan speed increases when the clutch
engages.
So you may hear an increase in fan noise. This is normal and
should not be mistaken
as the transmission slipping or making extra sh
It is merely the cooling system functioning properly. The fan will slow
down when additional cooling is not required and the clutch disengage .ifts.
S.
You may
also hear this fan noise when you start the engine. It will go away
as the fan clutch disengages.
If a Tire Goes Flat
It’s unusual for a tire to “blow out” while you’re driving, especially if you
maintain your tires properly.
If air goes out of a tire, it’s much more likely to
leak out slowly. But if you should ever have a “blowout,” here are a few tips
about what
to expect and what to do:
If
a front tire fails, the flat tire will create a drag that pulls the vehicle
toward that side. Take your foot off the accelerator pedal and grip the
steering wheel firmly. Steer
to maintain lane position, then gently brake to a
stop well out of the traffic lane.
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Downloaded from www.Manualslib.com manuals search engine Radiator Pressure Cap
NOTICE:
Your radiator cap is a 15 psi (105 kPa) pressure-type cap and
must be tightly installed to prevent coolant
loss and possible
engine damage from overheating. Be sure the arrows on the cap \
line up with the overflow tube on the radiator filler neck.
Thermostat
~ When you replace
1 your radiator pressure cap, a
GM cap is
1 recommended. See
l “Service Replacement
I Parts and Filler
Recommendations” in
the Index.
Engine coolant temperature is controlled
by a thermostat in the engine
coolant system. The thermostat stops
the flow of coolant through the
radiator until the coolant reaches
a preset temperature.
When
you replace your thermostat, an AC@ thermostat is recommended.
6-26

Downloaded from www.Manualslib.com manuals search engine Service Replacement Part and Filter
Recommendations
ENGINE (VIN)
OIL FILTER
AIR CLEANER FILTER
PCV VALVE
SPARK PLUGS* FUEL FILTER
RADIATOR CAP 4.3L (W)
PF52
A1163C
cv774c
CR43TSM
GF48
1
RC27
*Use copper-cored resistor type spark plugs.
Air Conditioning Refrigerants
Not all air conditioning refrigerants are the same. If the air conditioning
system in your vehicle needs refrigerant, be sure
the proper refrigerant is
used. If you’re not
sure, ask your GM dealer. For additional information, see
your “Warranty and Owner Assistance Information” booklet.
Refrigerant should be added only by a qualified
A/C technician.
Air Conditioning Refrigerant Capacity
TYPE
R-l34a
R-134a
SYSTEM
C-60* *
C-69***
QUANTITY*
2.00 lbs. (.91 kg)
3.00 lbs. (1.36 kg)
*All Quantities
Are Approximate
**Front A/C Only
***Front
& Rear A/C
NOTICE:
R-134a refrigerant is not compatible with R-12 refrigerant in
an air conditioning system. R-12 in an R-134a system
will cause
compressor failure, refrigerant oil sludge, or poor air
conditioning system performance.
6-68

Downloaded from www.Manualslib.com manuals search engine Maintenance Schedule I
30,000 Miles (50 000 km)
0
0
0
0
0
0
Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs at every
oil change (or every 6 months,
whichever occurs first).
Check redfront axle fluid
level and add fluid as needed. Check
constant velocity joints and
axle seals for leaking.**
Drain, flush and refill cooling system
(or every 24 months, whichever
occurs first). See “Engine Coolant’’
in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck.
Pressure test
the cooling system and pressure cap. An Emission
Control Service.
For 2-Wheel Drive vehicles only: Clean and repack the front wheel
bearings (or at each brake relining, whichever occurs first).
Replace spark plugs.
An Emission Control Service.
Replace fuel filter. An Emission Control Service.
Replace air cleaner filter. Replace filter more often under dusty
conditions. An Emission Control Service.
Rotate tires. See “Tire Inspection and Rotation” in the Index for proper
rotation pattern and additional information.
I DATE I ACTUALMILEAGE I SERVICED BY: I
7-1 1

Downloaded from www.Manualslib.com manuals search engine 60,000 Miles (100 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
0 Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs at every oil change (or every
6 months,
whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
bearings
(or at each brake relining, whichever occurs first),
0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel
0 Inspect engine accessory drive belt. An Emission Control Service.
0 Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See “Engine Coolant” in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck.
Pressure test the cooling system and pressure cap.
An Emission
Control Service.
0 Replace spark plugs. An Emission Control Service.
0 Inspect spark plug wires. An Emission Control Service.
0 Replace fuel filter. An Emission Control Service.
Replace air cleaner filter. Replace filter more often under dusty
conditions.
An Emission Control Service.
Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap
gasket for any damage. Replace parts
as needed. An Emission Control
Service.
DATE SERVICED BY ACTUAL MILEAGE
7-17

Downloaded from www.Manualslib.com manuals search engine I Maintenance Schedule I I ~~~ ~
87,000 Miles (145 000 km)
0
0
0
Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs
at every oil change (or every 6 months,
whichever occurs first).
Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
DATE
SERVICED BY ACTUAL MILEAGE
90,000 Miles (150 000 km)
0 Change engine oil and filter (or every 3 months, whichever occurs
first).
An Emission Control Service.
0 Lubricate the front suspension, ball joints and king pin bushings,
steering linkage and transfer case shift linkage, parking brake cable
guides, and brake pedal springs at every oil change
(or every 6 months,
whichever occurs first).
0 Check readfront axle fluid level and add fluid as needed. Check
constant velocity joints and axle seals for leaking.**
bearings (or at each brake relining, whichever occurs first).
0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel
0 Drain, flush and refill cooling system (or every 24 months, whichever
occurs first). See “Engine Coolant”
in the Index for what to use.
Inspect hoses. Clean radiator, condenser, pressure cap and neck.
Pressure test
the cooling system and pressure cap. An Emission
Control Service.
(Continued)
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