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ENGINE THERMOSTAT

Car Coolant thermostat Top quality for a top price
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Replace a Spare part Engine thermostat – a defective one or if the limit of use has been already reached. Find out useful information about Engine thermostat

Faulty thermostat
  • jamming of thermostat valve;
  • violation of the system integrity;
  • partial opening of the thermostat valve;
  • delayed opening of the thermostat valve;
  • wear, damage or destruction of the thermal sensitive element;
  • incorrect functioning of the part;
  • wear or damage to the seal.
Symptoms of faulty thermostat
  • overheating or insufficient heating of the engine;
  • increased fuel consumption;
  • loss of the vehicle power;
  • indicator «Check Engine» reading.
Causes of faulty thermostat
  • excessive vibration loads;
  • unstable operation of the engine;
  • pin oscillation;
  • insufficient coolant level in the system;
  • ingress of engine oil to the thermostat;
  • failure of the cooling fan;
  • overpressure in the system;
  • contamination of the system.
Diagnostics

Checking the correct operation of the thermostat is easy. First you need to warm up the engine. Then you need to measure the temperature of the hose that connects the thermostat to the radiator. The hose must be cold.

Normal opening temperature of the thermostat is 84-90 °C. The thermostat lower pipe operating temperature shall be the same. But to check it out on their own is very troublesome, so the analysis of the element is better to carry out at a service shop.

Evaluation of the thermostat performance must always be done at every routine diagnosis of the engine cooling system. The thermostat service life is about 100,000 kilometers. Nevertheless, it must be checked every year regardless of the mileage.

Replacement of the thermostat

Thermostat is one of the elements that can not be repaired if it becomes faulty. Replacing the thermostat does not require special tools, but it is essential to ensure its proper connection and installation, as well as to check the temperature of its opening.

When replacing the part, you need to drain the coolant and then loosen the clamps of the outlet and inlet radiator hoses. Then you need to disconnect the hose that connects the thermostat to the inlet. The cost of thermostat replacement is quite affordable, so it is strongly recommended to replace the item at the first signs of malfunction.

Engine thermostat replacement - instructions, descriptions and repair

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