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Engine Thermostat for auto

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Coolant thermostat for
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Engine Cooling System auto parts: Coolant thermostat

Thermostat is necessary in the car to regulate coolant circulation. In majority of cases it is attached to the engine block. When the engine works at temperature that reaches 75 °C, the thermostatic valve opens. Before that coolant passes only through the water pump, heating system radiator and the engine. Generally, in the liquid cooling radiator with coolant open valve is used. Thereby growth of cooling capacity can be observed. Modern cars often are equipped with several cooling liquid circulation systems.

If the indicator shows wrong figures, the cause is in the indicator or in the thermostat. Thermostat breakdown may be revealed by a big power consumption of the car for heating. In case of breakdown it is necessary to substitute the thermostat. For this purpose remove the old thermostat. Use a ring insertion to install a new one. While substitution it is necessary to pour out at least half of the coolant. After you install it fill in the coolant and make the pumping. The final stage of the testing while test drive will show how correct was the substitution.

When installing thermostat, pay attention to the filler ring, it should be new. It is present in any new set. Moreover, apply leak test to the thermostat after a test drive. An experienced car owner will be able to change the thermostat. Has the wiper broken down in your car? Or you need wiper pull rods and actuator arms? In our Internet shop you will find all spare parts for the car, for example, high-voltage cable, starter, cogged belt, transverse control arm, gearwheel, ignition module and many other original car parts.

Coolant thermostat failures

  • thermostat valves open and close irregularly;
  • depressurization of the system;
  • incomplete valves opening;
  • thermostat valves open at the wrong time;
  • thermosensitive element is worn-out or broken;
  • component operates with faults;
  • compressor is worn-out or broken.

Signs of thermostat failures

  • engine warms-up poorly or is overheated;
  • fuel consumption exceeds the norms;
  • engine power output is lower than usual;
  • “Check Engine” indicator is activated.

Causes of thermostat failures

  • strong vibration loads;
  • unstable work of engine;
  • loose fastenings;
  • level of cooling fluid is lower than it is required;
  • presence of motor oil in the Coolant thermostat;
  • cooling fan breakages;
  • high pressure level in the system;
  • strong clogging of the system.

Diagnostics

To check the thermostat proper functioning, performing of few simple actions is required. At first it is necessary to warm up the engine, then  measure the  temperature of the hose connecting the radiator to the Coolant thermostat. If the hose is cold, system works properly.

Coolant thermostat opening temperature shouldn't exceed 84–90°C. As well as the working temperature of the thermostat lower connection pipe. But we don’t recommend you to perform this operation without assistance of service station specialists.

Usually thermostat service life is 100 000 operational kilometers. However one should check  the existence of possible failures at least once a year. The thermostat operation analysis must be done when scheduled inspection of a car is carried out.

Replacement of thermostat

The damaged Coolant thermostat can't be repaired, it is to be replaced if faults were found. The operation is done by the standard tools. The installation of the part and measurement of opening temperature may only be difficult.  

Before replacement of the part it is necessary to drain a cooling fluid, to reduce a tension of clamps of heat exchanger inlet and outlet hoses. And only then the hose between the thermostat and outlet connection pipe can be disconnected. Coolant thermostat replacement is not very expensive. Therefore, it is desirable to change this part at the initial signs of breakage.

Top quality parts Engine Thermostat for your car
Thermostat, coolant | RIDEX 316T0067 Parts Details
  • Opening Temperature [°C]: 105
  • Diameter 2 [mm]: 25
  • Supplementary Article/Supplementary Info: with seal
  • Material: Aluminium
  • Height 1 [mm]: 38
  • Condition: New
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Thermostat, coolant | MAGNETI MARELLI 352317101260 Parts Details
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Thermostat, coolant | MEYLE 100 121 0048 Parts Details
  • Supplementary Info: MEYLE-ORIGINAL Quality
  • Supplementary Article/Supplementary Info: with seal
  • Temperature range to [°C]: 102
  • Temperature range from [°C]: 87
  • Condition: New
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Thermostat, coolant | FEBI BILSTEIN 43624 Parts Details
  • Opening Temperature [°C]: 97
  • Weight [kg]: 0,355
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  • Material: Plastic
  • Number of connectors: 2
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Thermostat, coolant | ABAKUS 038-025-0018 Parts Details
  • Opening Temperature [°C]: 83
  • Condition: New
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Thermostat, coolant | FEBI BILSTEIN 17890 Parts Details
  • Opening Temperature [°C]: 87
  • Supplementary Article/Supplementary Info: with seal
  • Weight [kg]: 0,063
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  • Quantity: 1
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Thermostat, coolant | ABAKUS 038-025-0008 Parts Details
  • Opening Temperature [°C]: 83
  • Condition: New
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Thermostat, coolant | BEHR THERMOT-TRONIK TM 13 97 Parts Details
  • Opening Temperature [°C]: 97
  • Supplementary Article/Supplementary Info: with seal
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Thermostat, coolant | GATES TH35488G1 Parts Details
  • Opening Temperature [°C]: 88
  • Housing Type: with housing
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Thermostat, coolant | ABAKUS 004-025-0016 Parts Details
  • Opening Temperature [°C]: 85
  • Condition: New
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Thermostat, coolant | TOPRAN 100 957 Parts Details
  • Opening Temperature [°C]: 87
  • Supplementary Article/Supplementary Info: with seal
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