Haltech Coolant Temperature Sensor - HT-010304
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Product Information
Full details
The Haltech Coolant Temperature Sensor (HT-010304) is designed for automotive enthusiasts and professional tuners who require high-precision thermal data for engine management systems or data logging. By providing accurate temperature readings directly to your ECU, it helps prevent engine damage due to overheating, though users must ensure their cooling system has a compatible 1/8 inch NPT port for proper installation.
All features
| Model Part Number | HT-010304 |
|---|---|
| Brand | Haltech |
Extended Product Information
FAQs
What is the thread size of this sensor?
The sensor features a 1/8 inch NPT thread.
Can I use this sensor with any ECU?
It is designed for use with Haltech systems, but it can be used with any ECU that supports standard NTC thermistor inputs, provided you configure the software calibration.
Is the wiring harness included?
The sensor includes the Deutsch DTM-2 plug and the necessary pins to build your own harness; it does not come with a pre-assembled wiring pigtail.
What is the maximum temperature this sensor can read?
It is rated to accurately measure up to 127 degrees Celsius (260 degrees Fahrenheit).
Does this sensor require a specific ground?
Yes, ensure the sensor is connected to a clean, chassis-referenced sensor ground provided by your ECU.
Troubleshooting
Erratic temperature readings in the ECU software
Check all electrical ground connections and verify the pins in the DTM-2 connector are seated correctly.
Sensor showing a constant high or low value
Verify the sensor resistance matches the calibration table in your ECU software settings.
Coolant leak at the mounting point
Remove the sensor, clean the threads, apply fresh thread sealant, and re-torque to specifications.
Pros and Cons
Pros
- High accuracy for reliable ECU data
- Durable, industrial-standard Deutsch DTM-2 connector
- Easy to install in standard 1/8 NPT ports
- Wide operating range suitable for high-performance engines
Cons
- Requires professional crimping tools for pins
- Limited to 1/8 inch NPT ports only
- Not suitable for temperatures exceeding 127 Celsius
Setup, Compatibility & Care
To install the sensor, identify an appropriate 1/8 inch NPT port on your engine's coolant housing. Use an appropriate thread sealant to prevent leaks. When wiring, ensure the Deutsch DTM-2 connector pins are crimped securely to avoid intermittent signals that could cause erratic ECU readings. For maintenance, periodically inspect the connector pins for signs of corrosion or moisture ingress, especially if the vehicle is exposed to harsh weather conditions or frequent wash-downs.