When the water temperature sensor fails, often displayed cold start or hot car temperature signal, producing VDO sensor, ECU not provide too thick mixture of signals, only relatively lean fuel mixture supplied to the engine air (hot car When the signal), the engine cold start easy. This situation needs to check the water temperature sensor plug contact is normal or replace the water temperature sensor. For example: Read the car static engine (referring to the cold car) data found that the temperature of the engine coolant ECU output of 105 ℃, but this time (the set temperature in winter) the actual temperature of the engine is only 1 ℃, Obviously, the water temperature signal of engine ECU received is wrong, indicating the emergence of the role of water temperature sensor temperature sensor of the first type is through its relatively simple changes to achieve the current internal resistance to change by the change in resistance of the sensor through the Changes to drive change in the water table, indirect, to tell people the engine operating temperature. The second category, the water temperature sensor is not what happens in terms of structure, VDO sensor production, but its role is to provide a temperature change of the analog signal to the engine control unit. It is supplied by the supply voltage 5V power supply control unit, VDO sensors, the control unit returns the signal to a linear change signal of 1.3V-3.8V. The main role is to tell the temperature of the engine control unit now how much. Conversely it is a signal to the control unit and its importance. The main engine work differently under different operating temperatures. For example: 86 degrees below the normal temperature of the engine more than 10 percent of jet fuel, VDO sensor wholesale, the purpose is to allow the engine to rapid heating to reduce cold engine wear. The temperature rose to 86 degrees and then let the engine a little less spray oil, a little slow to make the temperature of regeneration. So its role is very important. If he had had a problem, the engine control unit provides the wrong signal, such as in a hot car engine provides a low signal to your car if it's more than a little spray oil, so it becomes a little oil friends. Cheap VDO sensor | Generator Sensor (Online) | VDO sensor provided by the Dongguan City, South City Zhongxin Electrical and Mechanical operation. Dongguan Nancheng Zhongxin Electrical and operating (zhongxin888.net.cn) Dongguan, Guangdong, industrial products leader, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Zhongxin Electrical and Mechanical leadership with the staff warmly welcome all inquiries negotiations to create a better future for electromechanical faithful.