Engine Coolant Temperature (ECT) Sensor

Sensor signals coolant temperature to ECA. Sensor is threaded into an engine coolant passage near thermostat housing. Signal from ECT sensor affects the following.

• Air/Fuel Ratio
• Boost Pressure (2.2L Turbo)
• EGR Flow
• Fuel Pressure
• Idle Speed
• Ignition Timing (1.8L & 2.2L Turbo)
• Injector Timing (2.2L Turbo)
• Purge Flow
• Torque Converter Lock-Up (1.8L A/T)