Engine Coolant Temperature (ECT) Sensor

This sensor inputs the coolant temperature to the ECA. It is threaded into an engine water passage near the thermostat housing. The signal from the ECT affects the following:

• Air/Fuel Ratio
• Idle Speed
• EGR Flow
• Purge Flow
• Fuel Pressure
• Injector Timing (Turbo Engine)
• Boost Pressure (Turbo Engine)
• Ignition Timing (Turbo Engine)