Chrysler 5149096AB COOLANT Temperature

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Partially drain the cooling system to a level slightly below the cylinder heads. For V6 engines, disconnect the electrical connector from the ECT sensor located at the front of the lower intake manifold. Use a deep socket to unscrew the ECT sensor from the lower intake manifold. Wrap the threads of the ECT sensor with Teflon sealing tape before installing it. Refill the cooling system. For V8 engines, remove the accessory drivebelt and unbolt the air conditioning compressor without disconnecting any air conditioning fittings. Disconnect the electrical connector from the ECT sensor located on the front end of the engine block. Use a deep socket to unscrew the ECT sensor from the intake manifold. Wrap the threads of the ECT sensor with Teflon sealing tape before installing it. Refill the cooling system.

The coolant temperature indicator system includes a warning light or temperature gauge on the dash and a coolant temperature sending unit on the engine. The Engine Coolant Temperature (ECT) sensor, which also functions as the coolant temperature sending unit, is an information sensor for the Powertrain Control Module (PCM). If an overheating indication occurs, check the coolant level and ensure 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 on, indicating a good bulb. If the light doesn't come on, the bulb might be burned out, the ignition switch might be faulty, or the circuit might be open. Once the engine starts, the indicator light should go out and remain off, unless the engine overheats. If the light doesn't go out, check for any stored trouble codes in the Powertrain Control Module (PCM). If the engine tends to overheat easily, check the coolant to ensure it's the proper type and concentration.

The ECT sensor is located at the left end of the engine on the coolant adapter housing.

When the ignition switch is turned to Start and the starter motor is turning, the indicator light should come on, indicating a good bulb.

The ECT sensor is located at the front of the engine block, under the air conditioning compressor.

For the throttle body temperature sensor, remove the air cleaner, disconnect throttle cables, remove the accelerator cable bracket, unplug the electrical connector from the sensor, remove the sensor, apply heat transfer compound, install the sensor securely, and reverse the steps for reinstallation.

The sensor is located on the left side of the front of the cylinder head.

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

Remove the drivebelt and unbolt the air conditioning compressor to access the ECT sensor.

Start by partially draining the cooling system, then disconnect the cable from the negative battery terminal.

When the ignition switch is turned on and the starter motor is turning, the indicator light should be on to indicate an overheated engine.

The Engine Coolant Temperature (ECT) sensor, which also functions as the coolant temperature sending unit, provides information to the Powertrain Control Module (PCM).

To replace the Engine Coolant Temperature (ECT) sensor, start by partially draining the cooling system. Then, disconnect the cable(s) from the negative battery terminal(s). For the 3.6L V6, 3.7L V6, and 4.7L V8 engines, the ECT sensor is located either at the rear of the cylinder head on the left side of the engine or at the front of the intake manifold. Disconnect the electrical connector from the ECT sensor and carefully unscrew it using a deep socket. Before installing the sensor, wrap the threads with Teflon sealing tape to prevent leaks. For HEMI engines, remove the drivebelt and unbolt the air conditioning compressor to access the ECT sensor. Disconnect the electrical connector and unscrew the sensor from the intake manifold. Wrap the threads with Teflon sealing tape before installation. For diesel engines, remove the upper EGR tube and heat shield. Disconnect the electrical connector and unscrew the ECT sensor from the cylinder head. Wrap the threads with Teflon sealing tape before installation. Finally, refill the cooling system.