Variable Coolant Pump
| ITEM | DESCRIPTION |
|---|---|
| 1 | Variable coolant pump housing |
| 2 | Pulley |
| 3 | Electrical connector - Variable coolant pump shroud solenoid |
| 4 | Electrical connector - Variable coolant pump shroud position sensor |
| 5 | Variable coolant pump shroud |
| 6 | Impeller |
The variable coolant pump is installed at the front right of the cylinder block. A pulley attaches to the pump flange. The accessory drive belt drives the pulley at engine speed.
For additional information, refer to: ACCESSORY DRIVE .
During engine cold start, the impeller is fully covered by the shroud, therefore no engine coolant pumps into the cylinder block. As components warm up, the flow request increases in 5 stages. The engine coolant flow control continues until the complete powertrain system, including the transmission, achieves its operating temperature.