Engine Coolant Temperature (ECT) Sensor Removal/Installation [L3 With TC]

2008 Mazda CX-7 Touring, 2.3 3, AWDSECTION Engine Coolant Temperature (ECT) Sensor Removal/Installation [L3 With TC]
WARNING:
  • A hot engine can cause severe burns. Turn off the engine and wait until it is cool before removing the ECT sensor.
  1. Disconnect the negative battery cable.
  2. Remove the charge air cooler duct. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC] ).
  3. Remove the battery and battery tray. (See BATTERY REMOVAL/INSTALLATION[L3 WITH TC] ).
  4. Remove the air cleaner and air hose. (See INTAKE AIR SYSTEM REMOVAL/INSTALLATION[L3 WITH TC] ).
  5. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS[L3 WITH TC] ).
  6. Disconnect the wiring harness.
  7. Remove the ECT sensor.
  8. Install in the reverse order of removal.

    Tightening torque 

    10-14 N.m {102-142 kgf.cm, 89-123 in.lbf} 

  9. Refill the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS[L3 WITH TC] ).
    Fig 1: Identifying ECT Sensor
    G04859796Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

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.