Engine Coolant Temperature (ECT) Sensor Removal/Installation

2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Engine Coolant Temperature (ECT) Sensor Removal/Installation
WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
  • A hot engine can cause severe burns. Turn off the engine and wait until it is cool before removing the ECT sensor.
  1. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS .)
  2. Disconnect the ECT sensor connector.
    Fig 1: Locating ECT Sensor
    G03644170Courtesy of MAZDA MOTORS CORP.
  3. Remove the ECT sensor.
  4. Install in the reverse order of removal.

    Tightening torque 

    10-14 N.m 

    {1.02-1.42 kgf.m, 7.38-10.32 ft.lbf} 

  5. Refill the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS .)
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.