Turbocharger Wastegate Open
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.
| Callout | Component Name |
|---|---|
| 1 | Turbocharger Wastegate Actuator Solenoid Valve with Duty Cycle at 0 percent |
| 2 | Compressor |
| 3 | Turbine |
| 4 | Regulating Pressure |
| 5 | Exhaust Gas Pressure |
| 6 | Spring Force |
| 7 | Turbocharger Wastegate Diaphragm Valve |
The wastegate is completely closed at idle. All of the exhaust energy is passing through the turbine.
During normal operation, when wide open throttle is requested at lower engine speeds, the ECM commands the wastegate solenoid with a duty cycle of 100% to minimize any turbo lag. During engine loads in the middle and upper RPM ranges, the ECM commands the solenoid with a duty cycle of 65 - 80%.