which water temp sensor goes to gauge in 2004 peterbilt

• 2022-09-20

No matter what its internal structure is, it is a thermistor with a resistance value 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 water level sensor in the water tank converts the temperature of the cooling water into an electrical signal, which is fed back to the driving computer of the car. At this time, the ECU will timely adjust the control unit according to the pre stored data and feedback signals. Simple structure, more direct function. When the water temperature changes, the resistance value of its internal thermistor changes the current, which drives the digital change of the water temperature gauge and indirectly tells us the working temperature of the engine.

When the coolant is insufficient, the 2004 peterbilt water temp gauge sensor will send a command from the electronic control unit to require the ecu to replenish the coolant. At this time, the ecu will adjust the maximum and minimum values of the coolant volume according to the vehicle speed or the height of the accelerator pedal. At this time, ecu will automatically select the appropriate way to replenish the coolant. Of course, ecu is not only to supplement coolant, but also to adjust the engine oil pan during use to improve the vehicle's response to water temperature and oil pan temperature.

We know that the control unit of the 2004 peterbilt water temp gauge sensor can control the intake and exhaust temperature and water temperature of the cooling system, and then the ecu controls the oil circuit. Therefore, the ecu can control the oil circuit to ensure that the engine works well during the use of the engine, which is the main application of the water temperature sensor. The water temperature sensor is very important in the use of the engine. The core is its electronic control system, which mainly controls the intake air temperature and water temperature.

In addition, when the water temperature is lower than the set temperature, the injection program will be automatically started. This program can reduce engine damage while maintaining low engine temperature. This not only saves the fuel injection quantity, but also enables the fuel injection nozzle to work better. A highly integrated system, which can transmit the information of the computer system to the gasoline engine, as well as the oil level sensor in the oil circuit, and of course, it can also be sent back to the computer for command, so that the maintenance personnel will not be in a hurry when repairing the engine fault.