Some car engines are equipped with a water distributor with a built-in thermostat

If the thermostat fails, you need to change the water distributor

The water distributor has a thermostat with a solid temperature-sensitive filler, which maintains the operating temperature of the coolant and reduces the engine warm-up time.

The water distributor is installed on the rear end of the cylinder head.

When the coolant temperature is up to 88˚ C, the thermostat is completely closed and the liquid circulates through a small circuit, bypassing the radiator, which speeds up engine warm-up.

At 89˚ C, the thermostat begins to open, and at 99˚±2 C, it opens completely, allowing fluid to circulate through the radiator.

Replacing water distributor Renault Megane 2

To remove and install the water distributor, you will need: a 10 wrench, pliers, a flat-blade screwdriver, a container for draining the coolant.

To check the thermostat on the car, start a cold engine and touch the lower radiator outlet hose, it should be cold.

After the coolant temperature reaches 90-95˚ C, the hose should begin to heat up quickly, indicating that the fluid has begun to circulate through a large circle of the cooling system.

If this does not happen, the water distributor must be replaced.

Draining the coolant – “Replacing the Renault Megan 2 coolant".

Replacing water distributor Renault Megane 2

Pry off the wire harness bracket

Replacing water distributor Renault Megane 2

Flip back the bracket and take the wiring harness to the side

Replacing water distributor Renault Megane 2

Squeeze the bent ears of the radiator inlet hose clamp and slide the clamp along the hose

Replacing water distributor Renault Megane 2

Disconnect the hose from the water distributor pipe

Replacing water distributor Renault Megane 2

Squeeze the bent ears of the heater inlet hose clamp and slide the clamp along the hose

Replacing water distributor Renault Megane 2

Disconnect the hose from the water distributor pipe

Replacing water distributor Renault Megane 2

We press the clamp of the block of wires of the coolant temperature sensor

Replacing water distributor Renault Megane 2

Disconnect the block from the sensor

Replacing water distributor Renault Megane 2

Unscrew the water distributor mounting bolts

Replacing water distributor Renault Megane 2

Remove the bracket for the heater hose holders and the water distributor

U install the water distributor and all the details in the reverse order

Fill in coolant and remove air pockets from the engine cooling system.

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