Daewoo Nexia

since 1994 of release

Repair and car operation

Deu Neksiya
+ Maintenance instruction
+ Maintenance
+ Engine
+ 3. Engine (two top camshafts)
- Cooling system
   4.2. General description
   4.3. Care of cooling system
   4.4. Thermostat check
   4.5. Check of tightness of system of cooling
   4.6. Plums and filling of system with cooling liquid
   4.7. Thermostat
   4.8. Water pump
   4.9. Electric fan
   4.10. Broad tank
   4.11. Sensor of a signaling device of an overheat of the engine
   4.12. Radiator
   4.13. Diagnostics of malfunctions of system of cooling
+ Toplevnaya and exhaust systems
+ Electric chain
+ 7. Ignition system
+ 8. Electronic control unit and sensors
+ Transmission
+ 10. Five-speed transmission and main RPO MM5 broadcast
+ 11. Automatic Transmission
+ Steering
+ Running gear
+ 14. Forward suspension bracket
+ 15. Drive of forward wheels
+ 16. Back suspension bracket
+ Brake system
+ Body
+ Heating, ventilation
+ Electric equipment

4.13. Diagnostics of malfunctions of system of cooling

The engine overheats

POSSIBLE REASONS	ELIMINATION
Decrease in level of OZh	To add OZh
Low concentration of antifreeze in OZh	To check concentration of antifreeze in OZh
Weakening of a tension or failure of a belt of the water pump	To adjust a tension or to replace a belt
Tubes and edges of a radiator are hammered outside by insects, leaves, etc.	To clean a radiator
Leakages of OZh through thinnesses in connections of hoses, the pump, a heater, the thermostat case, a radiator, the drain crane or through laying of a head of cylinders	To eliminate leaks, to make necessary repair
Failure of the thermostat	To check serviceability of the thermostat, if necessary to replace
Late ignition	To adjust the ignition moment
Failure of the electric fan	To check serviceability of the electric fan, if necessary to replace
Hoses of a radiator are corked or worn-out	To replace hoses
Failure of the water pump	To replace the pump
Refusal of a cover of a tank	To replace a cover
Cracks in a head or the block of cylinders, obstruction of channels of a shirt of cooling	To repair

Cнижение of level of OZh

POSSIBLE REASONS	ELIMINATION
Leaks in a radiator	To examine a radiator, to eliminate leaks
Leaks in a broad tank or in a hose	To replace a tank or a hose
Weakening of fastenings or damage of hoses of a radiator or heater	To remount connections of hoses, to replace hoses or collars
Refusal of consolidation of the water pump	To replace the water pump
Refusal of laying of the water pump	To replace laying
Wrong inhaling of bolts of a head of cylinders	To tighten head bolts the demanded moment
Wrong inhaling of bolts of a head of cylinders	To replace if necessary laying of a head of cylinders
Leaks through: – inlet pipeline – laying of a head of cylinders – cap of the block of cylinders – heater heat exchanger – the heater crane (if it is established)	To eliminate leaks, to make repair or replacement of defective details and knots

The engine does not get warm to normal temperature

POSSIBLE REASONS	ELIMINATION
The valve of the thermostat hanged in open situation or improper type of the thermostat	Level of OZh is lower than MIN label
	To replace the thermostat
	To add OZh