Lincoln F5AZ-12A648-AB Sender Assembly

The dashboard gauge and the computer's fuel/air adjuster have different senders. The first one has a single wire while the latter has two or three. They are not placed in the same locations depending on the type of engine you have. For replacement, wait for the cooling system to cool off, open the pressure cap to release pressure, and then replace it. Disengage the electrical connector from the sender unit; uninstall it and promptly install another to minimize loss of coolant. Reattach electrical connection, inspect coolant level, and check if there is leakage when you start your car again.

The ECT sensor is fitted on the 4.0L V6 engine only, and it is located at the top of the engine near the upper hose of the radiator. Start with the removal of the cable that is connected in the negative terminal of the battery. Second, it Is necessary to drain the cooling system. Next to do is to remove the electrical connector of the ECT sensor, pull out the retaining clip and pull out the sensor. After that, the installation is done in the reverse order from which the removal was conducted. Last but not the least, replace the fluid of the cooling system.

This procedure applies to 2008 and earlier V6 models only. Begin by disconnecting the cable from the negative battery terminal. Next, drain the cooling system and remove the air intake duct. Locate the ECT sensor on the thermostat housing; on V6 models, the ECT sensor is situated there, while four-cylinder models utilize a CHT sensor. To remove the ECT sensor, disconnect the electrical connector and remove the retaining clip by pulling it straight up, then pull out the sensor. After that, remove and discard the old ECT sensor O-ring, ensuring to use a new O-ring when installing the ECT sensor, even if the old sensor is being reused. Installation follows the reverse order of removal. Finally, refill the cooling system, and after reconnecting the battery, allow the Powertrain Control Module (PCM) to relearn its idle and fuel trim strategy for optimal driveability and performance.

The coolant temperature indicator system consists of a warning light or a temperature gauge on the dash and a coolant temperature-sending unit mounted on the engine. On the models covered, the Cylinder Head Temperature (CHT) sensor (V8 models)or Engine Coolant Temperature (ECT)sensor(V6 models), which is an information sensor for the Powertrain Control Module (PCM), also functions as the coolant temperature sending unit. If an overheating indication occurs check the coolant level in the system and make sure all connectors in the wiring harness between the sending unit and the indicator light or gauge are tight. When the ignition switch is turned to start and the starter motor is turning, the indicator light (if equipped) should come this doesn't mean the engine is overheated; it just means that the bulb is good. If the light doesn't come on when the ignition key is turned to START the bulb might be burned out, the ignition switch might be faulty or the circuit might be open. As soon as the engine starts, the indicator light should go out and remain off, unless the engine overheats. if the light doesn't go out, the wire between the sending unit and the light could be grounded, the sending unit might be defective, or the ignition switch might be faulty. Check the coolant to make sure it's correctly mixed; plain water. with no antifreeze, or coolant that's mainly water, might have too low a boiling point to activate the sending unit.

The coolant temperature indicator system includes a warning light or temperature gauge on the dash and a coolant temperature sending unit on the engine.

On V6 engines, the sending unit for the gauge is located on the front lower part of the intake manifold, near the thermostat housing.

To replace the Crankshaft Position (CKP) sensor, disconnect the battery, remove components like the accessory drive belt or alternator, unscrew the sensor, and install a new one with specific alignment procedures for different models.

After the replacement unit has been installed, it is recommended to check the coolant level to ensure it is at the proper level.