Electric Thermostat
| ITEM | DESCRIPTION |
|---|---|
| 1 | Hose connection - Coolant pump |
| 2 | Hose connection - Engine coolant outlet tube |
| 3 | Electrical connector - Heater element |
| 4 | Hose connection - Radiator lower hose |
| 5 | Hose connection - Coolant expansion tank |
The electric thermostat is a multi-stage device, located in front of the cylinder block, beside the coolant pump inlet to provide fast response and control of the engine outlet temperature. The electric thermostat comprises a thermostat and a resistance heated wax element in one housing. The electric thermostat is not a serviceable item and it can be replaced as an assembly.
The electric thermostat housing has four connections. The lower connection receives a quick fit connector which receives engine coolant from the radiator lower hose and the Automatic Transmission Fluid (ATF) cooler. The upper hose connection is connected to the engine coolant outlet tube. The flow from this connection is governed by the electric thermostat. The larger connection at the side provides engine coolant flow to the coolant pump. The smaller connection at the side receives engine coolant from the heater core and the coolant expansion tank.