Gauge Inaccurate
- Disconnect temperature gauge sending unit connector. Connect Red lead of Gauge Tester (J 33431-B) to sending unit connector Dark Green wire. Connect other wire to ground. Adjust tester resistance dials to 1400 ohms, then adjust to 55 ohms.
- Temperature gauge should read cold, then hot. If gauge responds correctly, replace temperature sending unit. If gauge does not respond as described, check for open circuit in Dark Green wire. If circuit is okay, replace temperature gauge.
TEMPERATURE GAUGE SENDING UNIT RESISTANCE
| Temperature °F (°C) |
Ohms |
|---|---|
| 100 (38) | 1400 |
| 260 (127) | 55 |