Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Coolant Temperature Sensor/Switch (For Computer): Testing and Inspection

1. Remove sensor from intake manifold.
2. Immerse temperature sensing portion of sensor in water and check resistance. Ensure that housing portion of sensor is approximately .10 inch away from water when checking resistance values.
3. Resistance should be 2.45k ohms with water at room temperature, or 296 ohms when water is heated to 176°F.
4. If resistance values are not as specified, replace sensor.