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Home >> Pontiac >> 2005 >> Aztek Rally, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Engine Control System 3.8L (Introduction)) >> Repair Instructions >> Engine Coolant Temperature (ECT) Sensor Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2004 Chevrolet Monte Carlo and 2004 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use care when handling the coolant sensor. Damage to the coolant sensor will affect the operation of the fuel control system.
  1. Partially drain the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling.
  2. Remove the thermostat housing. Refer to Thermostat Replacement (3.4L) or Thermostat Replacement (3.8L) in Engine Cooling.
  3. Disconnect the ECT sensor electrical connector.
  4. Remove the ECT sensor.
    5. Fig 1: Removing ECT Sensor
    GM186069Courtesy of GENERAL MOTORS CORP.
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