9-5 Sedan (9600) L4-2.3L Turbo (B235) (2000)
Air Bypass Valve: Description and Operation
Charge Air Bypass Valve
Charge air bypass valve
Accelerator depressed
When the turbocharger is working, pressure builds up in the turbocharger delivery pipe, throttle body and intake manifold. As long as the throttle
butterfly is open, there is pressure on both sides of the bypass valve diaphragm which is held closed partly by the force of the integral spring and partly
by the pressure in the intake manifold.