Radiator surface clogging
In fact, the engine temperature most problems are caused by the surface of the radiator blockage, because Baotou Benz parts in order to increase the cooling area of the radiator, the radiating fin tube installed in the will, the gap between the fins is relatively small, it is easy to be Yang catkins, mud, dead insects and other debris jam. Once the blockage will result in inadequate ventilation, cooling capacity of a sharp decline, causing the engine coolant temperature is too high.
In order to avoid this situation caused by the engine temperature, I suggest you in every season of the past after Yang catkins, to conduct a thorough cleaning of the radiator, the radiator so as to ensure the whole summer can work in the best condition.
Two, radiator internal blockage
In fact, now the truck has little use of water to do the coolant, so in the north of Baotou, Mercedes Benz accessories radiator internal blockage has rarely appeared. But there are some cards friends or love of water, and the water contains many minerals, so it is easy to form scale deposition in the radiator, the impact of heat, resulting in high temperature.
If your truck long-term use of water as cooling liquid, and the emergence of the phenomenon of high temperature, in other places to check no problem, I suggest to check the radiator have been jamming, if the scale a lot, can go in the garage for clearing the radiator.
Three, fan clutch failure
Baotou North Benz accessories Clutch fan role I believe we are clear, it can reduce the fan speed in the coolant temperature is not high, reducing energy consumption, so as to achieve the objective of saving. But if it fails, when the coolant temperature is high and maintain a low speed, it will certainly cause the engine temperature is too high.
In fact, causing the clutch fan fault the engine temperature is not a few, but whether the normal operation we have no way to judge, so the current can only rely on substitution method to verify whether the fan clutch has been damaged, if your car has high temperature phenomenon, and the other part is no problem, you might consider replacing a fan clutch try.
Four, fan belt tightness
The fan belt tensioning degree caused by the lack of high engine temperature is very easy to distinguish, hand pressed obviously feel the relaxation, or throttle belt slipping squeakers, said belt tensioner has been inadequate. Belt tightness will lead to a shortage of fan and pump speed is too low, the cooling capacity of a serious decline, so the engine temperature is too high will be inevitable.
Five, ignition timing error
In fact, enter the electronic era, basically have no error caused by the ignition timing of engine temperature, but in some of the old mechanical pump engine, because of the high temperature caused by timing error or have occurred, if your car is using a mechanical pump, and the phenomenon of high temperature, then I suggest checking the ignition timing is in the normal range.
Six, high exhaust back pressure
Many people may not know, the engine exhaust back pressure will lead to high temperature phenomenon. Generally caused by high exhaust back pressure for two reasons: first, the exhaust brake valve back to the bad, resulting in poor exhaust. Two is the muffler or SCR catalytic converter internal blockage, resulting in excessive exhaust back pressure, both of which are likely to cause the engine temperature is too high, and will reduce the power to increase fuel consumption.
Seven, thermostat failure
Everyone knows that the thermostat is responsible for the engine coolant temperature control in a reasonable range, can not be too low and can not be too high. If the thermostat fails, when the temperature exceeds the opening temperature does not open, or open a smaller, it will cause the engine temperature is too high.
If everyone in the vehicle encountered in the engine high temperature phenomenon, we must check the thermostat working state is normal, but don’t put the thermostat without dismantling, because after removal may cause the engine temperature control, resulting in high fuel consumption, increased wear phenomenon.
The reason that causes the high temperature of the truck is far more than these, these are only the most common to several, and in addition to the reasons of the vehicle itself, improper operation will cause the engine high temperature. So in the face of such problems, we must carry out systematic examination, do not blindly repair, because the truck is a whole, any link problems, will cause the failure of different or similar.