Temperature Gauge Sending Unit Test
WARNING: This page is about a different car, the 1993 Honda Prelude. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect Red wire from temperature gauge sending unit. Use an ohmmeter to measure resistance of temperature gauge sending unit with engine cold. Start engine and allow coolant temperature to rise.
- Measure temperature gauge sending unit resistance as coolant temperature rises. If resistance values differ from specifications, replace temperature gauge sending unit. See TEMPERATURE GAUGE SENDING UNIT RESISTANCE table.
TEMPERATURE GAUGE SENDING UNIT RESISTANCE
| Temperature | Ohms |
|---|---|
| 133°F (56°C) | 142 |
| 185-212°F (85-100°C) | 49-32 |