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COOLING SYSTEM
TROUBLESHOOTING
Engine temperature too high
• Faulty temperature indicator
• Thermostat stuck closed
• Faulty radiator cap
• Insufficient coolant
• Passages blocked in radiator, hoses or water jacket
• Air in system
• Faulty cooling fan motor
• Faulty water pump
• Faulty fan motor relay
• Blown fuse (FAN MOTOR 20 A)
Engine temperature too low
• Thermostat stuck open
• Faulty fan motor relay
Coolant leaks
• Faulty water pump mechanical seal
• Deteriorated O-rings
• Faulty radiator cap
• Damaged or deteriorated cylinder head gasket
• Loose hose connection or clamp
• Damaged or deteriorated hoses
6-4
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Troubleshooting
