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Home >> Chevrolet >> 2005 >> Optra5 Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.4L DOHC - Introduction And Mechanical Repairs >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Removal Procedure

Removal Procedure

    Fig 1: View Of Engine Coolant Temperature Sensor
    GM1289410Courtesy of GENERAL MOTORS CORP.
  1. Relieve the coolant system pressure.
    2. CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
  2. Disconnect the negative battery cable.
    3. NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
  3. Disconnect the engine coolant temperature (ECT) sensor connector.
  4. Carefully remove the ECT sensor from the cylinder head underneath the electronic ignition (EI) system ignition coil.
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