Car engine cooling system Renault 19

For efficient engine operation and long service life, maintaining a high operating temperature in certain engine components is of utmost importance. Thus, the concept of "water" in the cooling system has long been replaced by the term "coolant" due to the high requirements placed on the physical properties of this fluid. The coolant is driven by a pump, circulates through the cooling system hoses and engine channels, providing heat removal.

How does engine cooling occur?
The coolant pump, driven by a V-belt, constantly pumps coolant through the cooling system. When the engine is cold, the thermostat closes off access to the radiator, and the circulation of the coolant is limited to the...

Pressurized cooling system
In order for the coolant to be able to remove more heat, it is under pressure in the cooling system. This increases the boiling point of the liquid from 100°C to about 120°C. Increasing the boiling point allows you to...

Checking the coolant level
The coolant level should only be checked on a cold engine and topped up if necessary. On a cold engine, the cooling system is without pressure. The hotter the engine, the more careful you should be when opening the...

Antifreeze additive
Your car's cooling system contains not just pure water, but a mixture of antifreeze and anticorrosive substances mixed with water. That's why the term "coolant" is commonly used. The mixture that is poured into the...

Checking the density of the coolant
To check the density of the coolant, you will need a hydrometer. Correction of concentration of antifreeze additive It often happens that the concentration of the antifreeze additive decreases due to the addition of...

Checking the cooling system for leaks
Are the hoses on the radiator, engine and heating system tight? Are the hoses cracked? Bend the hoses with your fingers to see if they are stiff and brittle - if so, replace them. Are the hoses securely fastened to the...

Radiator — design and cleaning
The radiator, mounted on a cross beam, consists of two tanks, between which are located a multitude of thin-walled tubes, connected to each other by a large number of cooling plates. As a result, the cooling surface has...

Replacing the coolant
Only if from the cooling system (the picture shows a 1.4-liter engine) air is completely removed through air purgers (shown by arrows), the cooling system will work without overheating. Depending on the modification of...

Removal and installation the radiator
To remove the radiator (on the left is a type "C" engine, on the right is a type "F" engine), you need to unscrew both mounting bolts on the left and right and remove it from the rubber supports (shown by arrows)....

Expansion tank cap
Since the cooling system operates under pressure, the expansion tank cap plays an important role: The gasket, when the cap is screwed on, prevents the pressure in the system from dropping. If the pressure in the cooling...

Thermostat — description of the operating principle
Small and large circle of coolant circulation In order for the engine to warm up to operating temperature faster, the cooling system is divided into a small and large coolant circulation circle. After starting a cold...

Troubleshooting a Thermostat
Sign of malfunction Reason/Features A. The temperature, according to the instrument readings, increases slowly, the operating temperature is reached very slowly, the heating is weak. Thermostat valve plate is stuck in...

Removal, checking and installation the thermostat
Removal and installation It is difficult to remove the thermostat on the road, since it is necessary to drain the coolant completely. In addition, when the engine is hot, this process takes a very long time, since it is...

Coolant pump — removal and installation
The coolant is driven by a centrifugal pump, which maintains circulation in the cooling system. The coolant pump on the C-type engine and the F-type engine is driven by a V-belt. The coolant pump is maintenance-free....

Checking the V-belt tension
Since the coolant pump on the C engine and all F engines is driven by a V-belt, servicing the cooling system also includes checking the V-belt tension. You can find a description of this work in the section Generator ....

Engine cooling system fan
All Renault l9 modifications are equipped with an electric engine cooling fan, which is switched on only when necessary. This saves engine power. A thermal switch is installed in the right radiator tank, which turns on...

Additional electric coolant pump
They are installed on a 16-valve engine and a diesel engine. When the engine stops running, the circulation of the coolant also stops, which can lead to local overheating of the cylinder head. This can be avoided by an...

Possible malfunctions and their elimination
Cooling system malfunction Its reason Troubleshooting A. Temperature sensor arrow (depending on modification) is in the shaded area or the coolant temperature indicator light is on. 1. The V-belt is too tight or broken....

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Other sections on other Renault models

➽ Power unit: Cooling system Renault Logan 2 (2012-2020)
➽ Power unit: Cooling system Renault Laguna 2 (2001-2007)
➽ Power unit: Cooling and lubrication system Renault Fluence 1 (2009-2020, petrol)
➽ Power unit: Cooling system Renault Symbol 2 (2008-2013, petrol)
➽ Power unit: Cooling system Renault Duster 1 (2009-2017)
➽ Power unit: Cooling system Renault Megan 2 (2002-2009, petrol)

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