LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Chevrolet >> 2004 >> Optra Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - 1.8L (L79) - Repair Instructions >> Repair Instructions >> Engine Coolant Temperature Sensor Replacement >> Installation Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Installation Procedure

    Fig 1: Identifying Engine Coolant Temperature (ECT) Sensor
    GM1256152Courtesy of GENERAL MOTORS CORP.
  1. Coat the threads of the ECT sensor with sealer.
    2. NOTE: Refer to Fastener Notice .
  2. Install the ECT sensor into the EI system ignition coil adapter.

    Tighten:  Tighten the ECT sensor to 20 N.m (15 lb ft)  .

  3. Connect the ECT sensor connector.
  4. Fill the coolant system.
  5. Connect the negative battery cable.
scientia non olet · About LEMON Manuals