Engine Coolant Temperature Sensor Buick Century VI

Note. Recover and store used coolant in a used coolant holding tank and submit the used coolant for recycling on a regular basis. Do not pour used coolant down the drain. Ethylene glycol antifreeze is very toxic. Disposing of ethylene glycol into the sewer system or ground water is both illegal and ecologically unsound.

Turn OFF the ignition. Partially drain the cooling system to below the Engine Coolant Temperature (ECT) sensor. (Scheme 8)or (Scheme 9). Disconnect the ECT sensor electrical connector. Carefully remove the ECT sensor.

Note. Replacement components must be the correct part number for the application. Components requiring the use of the thread locking compound, lubricants, corrosion inhibitors, or sealants are identified in the service procedure. Some replacement components may come with these coatings already applied. Do not use these coatings on components unless specified. These coatings can affect the final torque, which may affect the operation of the component. Use the correct torque specification when installing components in order to avoid damage.

Coat the ECT sensor threads with Thread Sealer (12346004) or the equivalent. Install the ECT sensor. Tighten the ECT sensor to specification. See TORQUE SPECIFICATIONS . Connect the ECT sensor electrical connector. Refill the engine coolant system. See COOLING SYSTEM BLEEDING under COOLING SYSTEM.

Scheme 8

Scheme 9

1. Remove fuel sender assembly from fuel tank. See «FUEL SENDER ASSEMBLY»(ref-159248-S06320356252003112000000). Remove the fuel level sensor electrical connector retaining clip. Disconnect the fuel level sensor electrical connector from under the fuel sender cover.
2. Remove the fuel level sensor retaining clip. Squeeze the locking tangs and remove the fuel level sensor. (Scheme 10) To install, reverse removal procedure.

Scheme 10

Remove the rear compartment floor trim. Remove the fuel sender access panel bolts. Remove the fuel sender access panel. Disconnect the electrical connector from the fuel tank pressure sensor. (Scheme 10) Remove the fuel tank pressure sensor from the fuel sender assembly. To install, reverse removal procedure.