Exhaust Gas Recirculation

EGR Bi-Metal Vacuum Switching Valve (BVSV)
Below 40°C (104°F) Closed (EGR Disabled)
Above 54°C (129°F) Open (EGR Enabled)

Engine Vacuum At Idle 400 mmHg (15.75 in.Hg, 53.3 kPa) or more