The Coolant Temperature Sensor detects the temperature of the engine coolant. This sensor is located on the engine or in one of the coolant passages in the cylinder head.

Features & Benefits

  • It senses changes in coolant temperature, which gives the ECU vital information to help control fuel injection, ignition timing and transmission shifting.
  • A failing sensor can cause the engine to run rich or lean, cause the transmission to shift incorrectly, or cause the Check Engine Light to illuminate.

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