Lumina APV V6-191 3.1L (1990)
Coolant Temperature Sensor/Switch (For Computer): Service and Repair
The coolant sensor must be handled carefully. If sensor is damaged, fuel injection operation will be affected.
1.
Disconnect battery ground cable.
2.
Drain coolant from radiator so level is below sensor.
3.
Disconnect coolant sensor electrical connector.
4.
Carefully back out coolant sensor and remove.
5.
Reverse procedure to install.
