Passport 2WD L4-2559cc 2.6L SOHC (4ZE1) (1994)
EGR Valve: Description and Operation
EGR System Component Locations (California)
PURPOSE
Allows a metered amount of exhaust gas to enter the intake air flow.
OPERATION and CONSTRUCTION
This valve is controlled by a flexible diaphragm which is spring loaded to hold the valve closed. Vacuum applied to the top side of the diaphragm
overcomes spring pressure and opens the valve in the exhaust port, allowing exhaust gas into the intake manifold and thus to the cylinders.