Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1998ASTRO VAN 2WD V6-4.3L VIN WREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSCOOLING SYSTEMSYSTEM SPECIFICATIONS
1998 Chevrolet Astro Van 2WD V6-4.3L VIN W
System Specifications
1998 Chevrolet Astro Van 2WD V6-4.3L VIN WSECTION System Specifications
Coolant Outlet Bolt/Stud 25 Nm (18 ft. lbs.)
Cooling Fan Clutch to Water Pump Bolts 56 Nm (41 ft. lbs.)
Cooling Fan Blade to Fan Clutch Bolts 33 Nm (24 ft. lbs.)
Drive Belt Tensioner Bolt 50 Nm (37 ft. lbs.)
Engine Oil Cooler Line Clip Bolt 10 Nm (89 inch lbs.)
Engine Oil Cooler Lines to Oil Filter Adapter Assembly Bolt 35 Nm (26 ft. lbs.)
Upper Fan Shroud Bolts 15 Nm (11 ft. lbs.)
Coolant Pump Pulley to Water Pump Bolts 25 Nm (18 ft. lbs.)
Coolant Pump to Engine Block Bolts 45 Nm (33 ft. lbs.)
Cooling Fan Clutch to Water Pump Bolts 56 Nm (41 ft. lbs.)
Cooling Fan Blade to Fan Clutch Bolts 33 Nm (24 ft. lbs.)
Drive Belt Tensioner Bolt 50 Nm (37 ft. lbs.)
Engine Oil Cooler Line Clip Bolt 10 Nm (89 inch lbs.)
Engine Oil Cooler Lines to Oil Filter Adapter Assembly Bolt 35 Nm (26 ft. lbs.)
Upper Fan Shroud Bolts 15 Nm (11 ft. lbs.)
Coolant Pump Pulley to Water Pump Bolts 25 Nm (18 ft. lbs.)
Coolant Pump to Engine Block Bolts 45 Nm (33 ft. lbs.)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.