Davies Craig Coolant Temperature Sensor - 1/4 Inch NPT

The primary thread size is 1/4" NPT.

Yes, it can be used with a 1/8" NPT fitting by employing an appropriate 1/4" NPT female to 1/8" NPT male adapter.

It is designed for use with Davies Craig fan switches and Electric Water Pump (EWP) controller kits that accept a 1/4" NPT sensor.

Basic hand tools such as wrenches and potentially a thread sealant applicator are usually sufficient. Refer to your specific installation guide for detailed requirements.

No, thread sealant is not typically included and must be sourced separately. Use a sealant suitable for high temperatures and automotive coolant.

Signs include erratic temperature readings, no readings at all, or if your engine management system reports a sensor fault code. Visual inspection for damage can also indicate a need for replacement.

While specific temperature ranges are often tied to the control unit, this sensor is designed for typical automotive engine coolant operating temperatures.

Check wiring connections to the control unit and ensure they are secure and correctly paired. Verify the sensor is properly threaded into the adaptor or port. Test the sensor's electrical resistance if possible.

Ensure the sensor is fully immersed in coolant flow. Check for air pockets in the cooling system. Verify the thread sealant is not obstructing coolant contact. Consider if the sensor is subjected to excessive heat or vibration, which might affect readings.

Remove the sensor and reapply thread sealant to the threads. Ensure the thread sealant is compatible with coolant and high temperatures. Tighten the sensor to the appropriate torque, avoiding over-tightening.

Verify the operating temperature range of the sensor is suitable for your application. Ensure the sensor was not exposed to extreme over-temperature conditions or electrical shorts. Check for physical damage or improper installation.