Coolant Temperature Sensor

1983 Renault 18i 4D Sedan, AutomaticSECTION Coolant Temperature Sensor
  1. Warm engine to normal operating temperature and stop engine. Using a thermometer, measure temperature of coolant. Disconnect electrical connector from temperature sensor and connect 1 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/RESISTANCE RELATIONSHIP

Temperature Ohms
14°F (-10°C) 7,000-12,000
68°F (20°C) 2,000-3,000
176°F (80°C) 250-400
RENDER: 1.0x

NO RELATED

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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.