Short description
| Short description |
The coolant pump, which is a radial pump, is located on the left side of the engine. It is driven by the crankshaft via the poly-V-belt circuit.
The thermostat is a traditional wax thermostat. It is situated on the exhaust side in a housing on the right-hand side of the engine. The thermostat starts to open at 82°C and is fully open at 95°C. The opening stroke is 9 mm.
The expansion tank is located on the left side of the engine compartment. The tank is connexcted to the thermostat housing, the turbocharger and the highest point of the cylinder head. The latter connections serve to ventilate the cooling system. The connection from the turbocharger cools the turbocharger through the thermosyphon effect when the engine is off. The coolant filler cap also houses a relief valve, which opens at 1.4 bar.
When the engine is off, coolant circulates in the turbocharger in the same direction as when the engine is running. This occurs with the help of the thermosyphon principle. After the engine has been run hard, a boiling/bubbling noise may be audible. This is completely normal.
The car is equipped with electric radiator fans that are located behind the radiator. These fans can be run at 4 different speeds and are controlled by ECM.
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