After the cold start or driving, the engine temperature is difficult to rise to the normal operating temperature range, the engine is too cold, mainly in the cold season or region of the use of automotive insulation devices and thermostat technical conditions caused by poor.
The reason
Baotou North Benz parts thermostat valve closed lax, cold start after the engine temperature is slow, in a longer period of time in a cold state, particularly severe in winter.
The working performance of the thermal insulation device is poor, and the heat preservation function of the radiator is lost, and the cold air flowing through the radiator and the engine can not be increased or reduced with the requirement of the thermal condition of the engine.
The fan with clutch lost the role of adjusting the fan speed, resulting in excessive exhaust, resulting in engine cooling.
The diagnosis and treatment methods
First, check whether the performance of the pre heat preservation device of the engine radiator of Baotou North Benz parts is good. If bad, it should be adjusted or repaired, so that the shutter work freely, with the engine temperature and flexible adjustment.
Exclusion of the fault of the clutch of silicon oil clutch fan in Baotou North Benz parts.
According to the thermostat check method to see whether its performance is good, if found that the main valve can not be closed should be replaced.