Repair of the cooling system of car engines Volkswagen Golf 4 1997-2004

Elements of the cooling system
Elements of the cooling system of a gasoline engine 1.8-I 1 - radiator; 2 - oil heat exchanger; 3 - water pump / thermostat; 4 - cylinder head / block; 5 - expansion tank; 6 -...

Adding coolant
The engine cooling system must be filled with a mixture of water, antifreeze and anti-corrosion agent G12. Additives to the coolant prevent defrosting of the engine block and the...

The composition of the coolant mixture
The content of antifreeze in the coolant must not exceed 60%, which corresponds to frost protection down to -40°C, otherwise the protective and cooling properties of the coolant...

Coolant replacement
The coolant must be replaced after any work has been carried out on the elements of the cooling system with the coolant drained. If during the repair the cylinder head, cylinder...

Coolant drain
Warning: When opening the expansion tank cap on a hot engine, care must be taken as escaping vapors can cause severe burns. To do this, close the cap of the expansion tank with a...

Filling the cooling system
1. Prepare the required amount of coolant from 50% water and 50% antifreeze with anti-corrosion additive G12. 1.6/1.8/2.3-I petrol engines and diesel engines. 2. Connect the...

Removing the thermostat
Location of the thermostat on petrol engines 1.6-/1.8-I 1 - thermostat; 2 - sealing ring; 3 - connecting fitting; 4 - bolt Location of the thermostat on diesel engines 1 - bolt; 2...

Checking the functionality of the thermostat
Operating position of the thermostat a - the thermostat is closed; b - thermostat open Order of execution 1. Measure length (A) closed thermostat. 2. A rough test of the...

Installing a thermostat
Order of execution 1. Clean the o-ring mating surface. 2. Reinstall the thermostat. On 1.8-I petrol engines and diesel engines, install the thermostat and turn it 90°clockwise....

Removing the heatsink and fan
The front of the car when the radiator is removed 1 - bolts for fastening the front beam; 2 - bolt (do not unscrew completely); 3 - radiator mounting bolts; 4 - capacitor mounting...

Heat sink and fan installation
Radiator of the cooling system 1 - a bolt of fastening of the holder of the fan; 2 - temperature sensor; 3, 4 - radiator holders Order of execution 1. Install the fan holder to...

Removal and installation of the water pump on the 4-cylinder petrol engine
Elements of fastening of the water pump on the petrol engine 1,4-I 1 - tension roller; 2 - bolt; 3 - gasket; 4 - water pump; 5 - bolts; 6 - bracket; 7 - bolt Engine water pump...

Removal and installation of the water pump on a 5-cylinder gasoline engine
Unscrewing the water pump pulley on the 2.3-I-VR5 engine 1 - pulley mounting bolts; 2 - belt pulley; 3787 - special tool for holding the pulley Warning: The basic operations for...

Removal and installation of the water pump on the diesel engine
Diesel engine water pump 1 - bolt; 2 - guide roller; 3 - bolt; 4 - water pump; 5 - sealing ring Removing 1. Remove the lower mudguards of the engine compartment. 2. Drain the...

Coolant hoses
Check up a condition of hoses of system of cooling and at detection of defect replace a hose as follows. Replacement 1. Drain the coolant from the cooling system. 2. Remove the...

Cooling system malfunctions
CAUSE ELIMINATION METHOD The coolant temperature is very high. At the same time, the control lamp on the instrument cluster is lit Not enough coolant in the cooling system Check...

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Car cooling system Volkswagen Golf 4