Temperature Gauge
NOTE:
When performing this test, DO NOT
connect sender wire directly to ground.
- Disconnect temperature sender wire from sending unit. Connect a 12-volt 3.4-watt test bulb between connector terminal and ground. Turn ignition on. Test bulb should flash and temperature gauge needle should deflect.
- If results are correct, remove thermosensor (sending unit) from engine block and place sending unit in hot 158°F (70°C) water. SeeFig 1 . Resistance readings should be 90-117 ohms at 158°F (70°C) and 20-26 ohms at 239°F (115°C) on all models.
- Remove instrument cluster from instrument panel. Measure resistance between terminals of the temperature gauge at rear of cluster. Resistance should be between 49-61 ohms on all models.