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.
Coolant Temperature Sensor
Warm engine to normal operating temperature and stop engine. Using a thermometer, measure temperature of coolant. Disconnect electrical connector from temperature sensor and connect one lead of ohmmeter to terminal in sensor and other lead to ground. Ohmmeter readings should be as specified in table. If not, replace temperature sensor.
| Temperature | Ohms |
|---|---|
| 14°F (-10°C) | 7,000-12,000 |
| 68°F (20°C) | 2,000-3,000 |
| 176°F (80°C) | 250-400 |
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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.