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what should temp gauge sending unit voltage be? universal deisel
What should temp gauge sending unit voltage be? Universal deisel. The general voltage is 5v, which is used to supply power for the computer version. Some voltages are 12v. The sensor voltage on the automobile is generally determined by the voltage of the automobile battery. For most cars, the battery voltage is 12V, so the sensor is mostly powered by 12V. Most freight car batteries are 24V, so most freight car sensors are powered by 24V. Strictly speaking, universal deisel water temp gauge sending units are divided into two categories. No matter which type, its internal structure is a thermistor, and its resistance is between 275 ohms and 6500 ohms. The lower the temperature is, the higher the resistance is. The higher the temperature is, the lower the resistance is. The universal deisel water temp gauge sending units and water level sensor is composed of a temperature controller and a water level control part. It is also equipped with a pressure relief device in front of the electric valve and a rotary muffler heater for heating.
The water level sensor in the vessel transmits the sensed water level signal to the controller. The computer in the controller compares the measured water level signal with the set signal to obtain the deviation. Then, according to the nature of the deviation, it sends the "open" and "close" instructions to the electric water supply valve to ensure that the vessel reaches the set water level. After the water inlet program is completed, the computer in the temperature control part sends an "ON" command to the electric valve supplying heat medium, so the system starts to heat the water in the container.
When the universal deisel water temp gauge sending unit fails, the temperature signal displayed when the vehicle is cold is still the temperature signal when the vehicle is hot. The ECU can not get the correct signal and can only supply the thinner mixture of the engine. Therefore, the engine is not easy to start when the vehicle is cold, and unstable idle operation and insufficient acceleration power will also occur.
Generally, the voltage of the sensor is not too high or too low. Possible cause: There is a problem with the circuit of the computer board. The voltage of the car is 12v, so the voltage of the car is kept at 12v. If the voltage regulator of the engine is broken, the faster the engine rotates, the higher the voltage will be. The sensor itself has failed.
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