LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Acura >> 2003 >> MDX Base >> Repair and Diagnosis >> Engine Performance >> System >> PGM-FI System >> ECT Sensor Replacement
April 5, 2026: LEMON Manuals is launched! Read the announcement.

ECT Sensor Replacement

  1. Drain the engine coolant (see COOLANT REPLACEMENT ).
  2. Remove the intake manifold (see REMOVAL ).
  3. Disconnect the ECT sensor 2P connector (A).
    Fig 1: Disconnecting ECT Sensor 2P Connector
    G03639834Courtesy of AMERICAN HONDA MOTOR CO., INC.
  4. Remove the ECT sensor (B).
  5. Install the sensor in the reverse order of removal with a new O-ring (C), then refill the radiator with engine coolant (see COOLANT REPLACEMENT ), and bleed air from the cooling system with the heater valve open.