Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1983 Jaguar XJ-SFACTORY OEM SERVICE PROCEDURE
Coolant Temperature Sensor Test
- Disconnect battery ground cable. Remove connector from the temperature sensor. Connect an ohmmeter between sensor terminals. Resistance should be as specified. See Temperature Sensor Resistance table.
- Check the resistance between each of the sensor terminals and the sensor case. High or infinite resistance should be present. Connect the sensor connector and the negative battery cable.
TEMPERATURE SENSOR RESISTANCE
| Temperature °F (°C) | Ohms |
|---|---|
| 14 (-10) | 9200 |
| 32 (0) | 5900 |
| 50 (10) | 3700 |
| 68 (20) | 2500 |
| 86 (30) | 1700 |
| 104 (40) | 1180 |
| 122 (50) | 840 |
| 140 (60) | 600 |
| 158 (70) | 435 |
| 176 (80) | 325 |
| 194 (90) | 250 |
| 212 (100) | 190 |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.