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3.9. Diagnostics of malfunctions of the cooling system

Symptom Possible reason
Overheat Level of cooling liquid fell in system (see the Head Routine maintenance of the car).
The driving belt of the water pump is faulty, or adjustment of effort of its tension is broken (see the Head Routine maintenance of the car).
Passability of a radiator is broken or its lattice is blocked (see the Head the Cooling system).
The thermostat is faulty (see the Head the Cooling system).
The radiator cover is damaged and does not hold pressure (see the Head the Cooling system).
Installation of a corner of an advancing of ignition is broken (see the Head Sistem of ignition).
Overcooling The thermostat is faulty (see the Head the Cooling system).
External leak of cooling liquid takes place Hoses are damaged mechanically or as a result of material aging, or fastening by their collars weakened (see Chapters Routine maintenance of the car and the Cooling system).
The epiploon of the water pump is damaged (see Chapters Routine maintenance of the car and the Cooling system).
The radiator, the heat exchanger of a heater or broad tank is damaged (see the Head the Cooling system).
Tightness of drain traffic jams of the radiator/block of cylinders is broken, or release traffic jams of a water shirt of the block of the engine are damaged (see Chapters the Engine and the Cooling system).
Internal leak of cooling liquid takes place Laying of a head of cylinders is punched (see the Head Dvigatel). The head or the block of cylinders are burst (see the Head Dvigatel).
There are losses of cooling liquid In system too much liquid is filled in (see the Head Routine maintenance of the car).
There is a vykipaniye of cooling liquid owing to an engine overheat.
External or internal leak of cooling liquid takes place (see above). The radiator cover is faulty (see the Head the Cooling system).
Circulation of cooling liquid is broken The water pump is faulty (see the Head the Cooling system).
The cooling system is blocked (see Chapters Routine maintenance of the car and the Cooling system).
The driving belt of the water pump is faulty, or adjustment of effort of its tension is broken (see the Head Routine maintenance of the car).
The thermostat is jammed (see the Head the Cooling system).