5.7L Engine

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: ECT Location 5.7L

Courtesy of DAIMLERCHRYSLER CORP.

1 - TOP OF AIR CONDITIONING COMPRESSOR

2 - ECT SENSOR LOCATION

The Engine Coolant Temperature (ECT) sensor on the 5.7L engine is located under the air conditioning compressor. See Fig 1. It is installed into a water jacket at the front of the cylinder block. See Fig 2.

Fig 2: ECT Remove / Install 5.7L

Courtesy of DAIMLERCHRYSLER CORP.

1 - FRONT OF INTAKE MANIFOLD

2 - ELECTRICAL CONNECTOR

3 - ECT SENSOR

WARNING: HOT, PRESSURIZED COOLANT CAN CAUSE INJURY BY SCALDING. COOLING SYSTEM MUST BE PARTIALLY DRAINED BEFORE REMOVING THE COOLANT TEMPERATURE SENSOR.

Partially drain the cooling system (Refer to COOLING - STANDARD PROCEDURE) .
Remove accessory drive belt (Refer to COOLING/ACCESSORY DRIVE/DRIVE BELTS - REMOVAL) .
Carefully unbolt air conditioning compressor from front of engine. Do not disconnect any A/C hoses from compressor. Temporarily support compressor to gain access to ECT sensor. Refer to HVAC - SERVICE INFORMATION for information.
Disconnect electrical connector from sensor. See Fig 2.
Remove sensor from cylinder block.