Engine Coolant Temperature Sensor

WARNING: This page is about a different car, the 2003 Dodge Grand Caravan, 2003 Dodge Caravan, 2003 Chrysler Voyager, and 2003 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.

Engine Coolant Temperature (ECT) sensor delivers input signal to Powertrain Control Module (PCM) to indicate engine coolant temperature. PCM uses input signal for controlling air/fuel ratio, ignition system, idle speed and cooling fan operation. ECT sensor is located on or near the thermostat housing. See Fig 1 and Fig 2 .

Fig 1: Locating Engine Coolant Temperature Sensor (2.4L)

Courtesy of CHRYSLER CORP.

Fig 2: Locating Engine Coolant Temperature Sensor (3.3 & 3.8L)

Courtesy of CHRYSLER CORP.