EGR Valve
FUEL FILLER CAP -- If the pressure in the fuel tank drops below -4.413 +/- 1.275 kPa (-.640 +/- .185 psi) the valve will open to relieve the negative pressure.
Vacuum required to open EGR Control Solenoid Valve 33 kPa (10 in. Hg)
EGR Valve opening vacuum 23 kpa (6 in. Hg)
Secondary Air Solenoid Valve opening vacuum 20 kPa (6 in. Hg)