4954905
Temperature Sensor
Cummins®

The Cummins 4954905 Temperature Sensor is a specialized component designed for use in commercial trucks. Its primary purpose is to monitor the engine temperature, providing data that helps maintain optimal performance and efficiency. By accurately measuring temperature, this sensor plays a significant role in the overall operation and health of the truck’s engine system.

Basic Concepts of Temperature Sensors

Temperature sensors are devices that measure the temperature of their surroundings and convert this measurement into an electrical signal. These sensors are integral to various automotive systems, where they help regulate engine performance, ensure passenger comfort, and monitor the health of different components. In automotive applications, temperature sensors are often used to monitor engine temperature, transmission fluid temperature, and even the temperature inside the cabin ¹.

Role of the 4954905 Temperature Sensor in Truck Operation

The Cummins 4954905 Temperature Sensor performs several specific functions within a truck’s system. It continuously monitors the engine temperature, providing real-time data to the truck’s electronic control unit (ECU). This data allows the ECU to make adjustments to the engine’s operation, ensuring it runs within safe temperature limits. Additionally, the sensor aids in diagnostics by providing valuable information that can help identify potential issues before they become serious problems ².

Key Features

The Cummins 4954905 Temperature Sensor is designed with several key features that enhance its performance and reliability. Its construction includes high-quality materials that ensure durability and accuracy in various operating conditions. The sensor is engineered to provide precise temperature readings, which are crucial for maintaining engine efficiency. It is also designed for easy integration with the truck’s systems, ensuring seamless operation and compatibility with the vehicle’s ECU.

Benefits

The Cummins 4954905 Temperature Sensor offers several benefits that contribute to the overall performance and safety of commercial trucks. By providing accurate temperature readings, it helps improve engine efficiency, ensuring that the truck operates at peak performance. Enhanced safety is another significant benefit, as the sensor allows for early detection of overheating, which can prevent engine damage. Additionally, the sensor supports maintenance scheduling by providing data that can help predict when maintenance is needed, thereby reducing downtime and maintenance costs ³.

Troubleshooting and Maintenance

Common issues with the Cummins 4954905 Temperature Sensor may include inaccurate readings or sensor failure. Diagnostic steps to address these issues involve checking the sensor’s connections, ensuring it is properly installed, and verifying the accuracy of its readings against known standards. Regular maintenance practices, such as inspecting the sensor for signs of wear or damage and ensuring it remains clean and free of debris, can help ensure its longevity and reliable performance.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and emissions solutions. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing high-quality, reliable products. The company’s extensive product range and commitment to innovation have made it a trusted name among truck manufacturers and operators worldwide.

Temperature Sensor 4954905 Compatibility with Cummins Engines

The Temperature Sensor part number 4954905, manufactured by Cummins, is designed to be compatible with a variety of Cummins engine models. This sensor plays a crucial role in monitoring and regulating the engine’s temperature, ensuring optimal performance and preventing overheating.

Compatible Engines

• 15N CM2380 M104B
• 6B5.9
• 6C8.3
• B4.5 CM2350 B129B
• B5.6 CM2670 B152B
• B5.9 CM2670 B166C
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125
• C GAS PLUS CM556
• D4.0 CM2620 D103B
• F2.8 CM2620 F135B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• ISB (Chrysler)
• ISB CM2150
• ISB CM550
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN

Grouping by Engine Series

• 15N Series

  • 15N CM2380 M104B

• 6 Series

  • 6B5.9
  • 6C8.3

• B Series

  • B4.5 CM2350 B129B
  • B5.6 CM2670 B152B
  • B5.9 CM2670 B166C
  • B6.7 CM2350 B135B
  • B6.7 CM2670 B153B
  • B6.7 CM2670 B164C
  • B6.7 G CMOH6.0 B125

• C Series

  • C GAS PLUS CM556

• D Series

  • D4.0 CM2620 D103B

• F Series

  • F2.8 CM2620 F135B
  • F3.8 CM2350 F120B
  • F3.8 CM2350 F128C
  • F3.8 CM2620 F137B
  • F3.8 F102
  • F4.5 CM2620 F139B
  • F4.5 CM2620 F141C

• ISB Series

  • ISB (Chrysler)
  • ISB CM2150
  • ISB CM550
  • ISB CM850
  • ISB/ISD4.5 CM2150 B119
  • ISB/ISD6.7 CM2150 SN

This comprehensive compatibility ensures that the Temperature Sensor 4954905 can be used across a wide range of Cummins engines, providing reliable temperature monitoring and contributing to the overall efficiency and longevity of the engine.

Role of Part 4954905 Temperature Sensor in Engine Systems

The Temperature Sensor (part 4954905) is integral to the efficient operation of various engine systems. It provides essential data that allows these systems to function optimally. Here’s how it interfaces with several key components:

Coolant Temperature Sensor

The temperature sensor works in conjunction with the coolant temperature sensor to monitor the engine’s thermal state. This data is vital for maintaining the engine within its optimal operating temperature range.

Electrical Accessories

Electrical accessories rely on accurate temperature readings to function correctly. The temperature sensor ensures these accessories operate within safe parameters, preventing damage from overheating.

Electronic Control Module (ECM) Wiring Harness

The temperature sensor sends signals through the ECM wiring harness to the Engine Control Module (ECM). This communication is essential for the ECM to make real-time adjustments to engine performance.

Electronic Control Pressure Valve

By providing temperature data, the sensor assists the electronic control pressure valve in regulating fuel pressure. This ensures efficient fuel delivery and combustion, enhancing overall engine performance.

Electronic Fuel Control Valve

Accurate temperature readings from the sensor help the electronic fuel control valve adjust fuel mixture ratios. This is particularly important during cold starts and varying operating conditions.

Electronic Interface Module

The temperature sensor feeds data to the electronic interface module, which processes this information to display relevant metrics on the engine instrument panel. This allows for real-time monitoring of engine health.

Engine Control Module (ECM)

The ECM uses temperature data from the sensor to make critical decisions about fuel injection timing, ignition timing, and other parameters that affect engine efficiency and emissions.

Engine Control Module Mounting

While not directly interacting, the secure mounting of the ECM ensures that the temperature sensor’s data is reliably transmitted and processed without interference.

Engine Instrument Panel

Temperature readings are displayed on the engine instrument panel, allowing operators to monitor engine conditions and take corrective actions if necessary.

Engine Monitor Mounting

Proper mounting of the engine monitor ensures that temperature data is accurately recorded and displayed, contributing to effective engine management.

Exhaust Gas Recirculation (EGR) Arrangement

The temperature sensor provides data that helps manage the EGR system. This ensures that exhaust gases are recirculated efficiently, reducing emissions and improving fuel economy.

Fuel Filter Head

Although indirectly related, the temperature sensor’s data can influence the operation of the fuel filter head by ensuring that fuel remains within optimal viscosity ranges for efficient filtration.

Fuel Pump

Temperature data assists in regulating the fuel pump’s operation, ensuring that fuel is delivered at the correct pressure and temperature for optimal combustion.

Fuel Pump Adapter

The fuel pump adapter may use temperature data to adjust settings, ensuring that fuel is correctly metered and delivered to the engine.

Fuel System

Overall, the fuel system benefits from temperature sensor data by maintaining fuel in an optimal state for combustion, thereby enhancing engine performance and efficiency.

Keel Cooler Plumbing

In marine applications, the temperature sensor helps manage the keel cooler plumbing system, ensuring that engine coolant is maintained at the correct temperature to prevent overheating.

Long Block Kit

While part of the engine assembly, the long block kit’s components rely on temperature data to operate efficiently, ensuring longevity and performance.

Lubricating Oil Filter

Temperature data can influence the viscosity of lubricating oil, ensuring that the oil filter operates effectively in filtering out contaminants.

Oil Temperature Sensor

Working alongside the oil temperature sensor, the temperature sensor provides comprehensive thermal data for the engine, allowing for better management of both coolant and oil temperatures.

Power Unit Cooling System

The temperature sensor is vital for the power unit cooling system, ensuring that cooling fans and radiators operate efficiently to maintain engine temperature within safe limits.

Pressure Temperature Sensor

Often working in tandem, the temperature sensor and pressure temperature sensor provide a comprehensive view of engine conditions, allowing for precise control over various engine parameters.

Thermostat Housing

The temperature sensor interacts with the thermostat housing to ensure that the thermostat operates correctly, regulating the flow of coolant to maintain engine temperature.

Thermostat Housing Assembly

The assembly relies on temperature data to function effectively, ensuring that the engine remains within its optimal temperature range under varying conditions.

Conclusion

The Cummins 4954905 Temperature Sensor is a critical component in the operation and maintenance of commercial trucks. By providing accurate and reliable temperature data, it ensures that the engine operates within safe parameters, enhances efficiency, and supports early detection of potential issues. Its compatibility with a wide range of Cummins engines and integration with various engine systems underscore its importance in maintaining the overall health and performance of the vehicle.