Thermal Vacuum Valve
Thermal vacuum valve is a major component of EGR system. Test procedures for various thermal vacuum valves are contained in "Datsun Exhaust Gas Recirculation System" article.
NOTE:
Application of thermal vacuum valves between models varies greatly. The 2-port and 3-port valves may be used in any combination to comply with emission standards. Ensure proper valve and connections are used for applicable model.