Engine cooling and ventilation Renault Scenic 1

Coolant circulation
The main components of the cooling system are a radiator, a water pump, a thermostat and an electric radiator fan (see illustration 1.0). 1 - engine; 2 - radiator; 3 - expansion tank; 4 - heater radiator; 5 - thermostat...

Coolant — replacement
Attention! If the coolant is drained as part of a vehicle repair, it must be collected for reuse. If the water pump, radiator or cylinder head is being replaced, the coolant must be replaced with a new one. Only fill...

Cooling system — leak test
The tightness of the cooling system, as well as the performance of the exhaust valve on the radiator filler cap, can be checked using a special device. The leak test procedure is given with the RENAULT tool, although...

Thermal switch — check
The thermal switch is screwed into the radiator and is located above the lower coolant hose. The thermal switch is designed to turn on the radiator fan when the coolant is heated to a certain temperature. Checking the...

Coolant temperature sensor — removal, installation and inspection
The coolant temperature indicator sensor registers the current engine temperature and transmits this data to the engine control unit. The sensor consists of an NTC element that reduces the resistance of the sensor as...

Thermostat — removal, installation and inspection
As the engine temperature rises, the thermostat opens a large coolant circuit. If, due to a malfunction, the thermostat does not work, the engine will overheat. This position is indicated by the coolant temperature...

Radiator — removal and installation
During the operation of the car, the narrow channels of the radiator can become clogged with lime deposits, as well as sediments from the coolant. This reduces the cooling effect and the engine may overheat. In this...

Water pump — removal and installation
The water pump is beyond repair. If a defect occurs, the pump must be replaced as a set. The reason for the leakage of coolant on the cylinder block near the water pump when the engine is hot, as a rule, is a defect in...

Heating system — design description
9.0 Heating system: 1 - heater radiator; 2 - heater fan; 3 - air distribution damper lever; 4 - drive of air distribution dampers; 5 - cable drive air distribution dampers; 6 - damper cable for mixing hot and cold air a...

Heater switches — removal and installation
Removing 1. Remove the ashtray. 2. Unscrew bolts A and remove the ashtray holder (see illustration). 10.2 Unscrew bolts A and remove the ashtray holder 3. Unscrew two bolts In fastenings of the control panel of a...

Draft dampers heater — removal and installation
On vehicles without air conditioning, the throttle cables can be removed without dismantling the instrument panel. If the air conditioner is installed, then to remove the air distribution damper rods, you will need to...

Heater fan electric motor — removal and installation
Attention! Depending on the configuration, the vehicle may be equipped with a heater with or without air circulation mode in the passenger compartment. A heater with recirculation mode can be recognized by the presence...

Additional resistance of the fan motor — removal and installation
Removing 1. Disconnect the wire terminal «masses» (-) from the battery. Attention! This deletes data from the memory devices, for example, the security code of the radio. Before disconnecting the battery, please read...

Cabin filter — removal and installation
Removing 1. Open the hood. Depress the two clamps G and remove the filter for cleaning the air entering the passenger compartment (see illustration). 14.1 Depress the two clamps G and remove the filter for cleaning the...

Air conditioner — design description
15.0 Schematic diagram of the air conditioning unit: 1 - fan; 2 - evaporator; 3 - throttle valve; 4 - connecting pipe for supplying low pressure during service work; 5 - connecting pipe for supplying high pressure...