Skylark V6-173 2.8L VIN X 2-bbl (1984)
Thermal Vacuum Valve: Testing and Inspection
EGR/EFE/Elec Module Retard Dist TVS (EGR-EFE-EMR-DTVS)
Fig. 30 EGR/EFE/EMR Thermal Vacuum Switch
Below the switching point, Ports 1 and 2 and 3 and 6 should be connected, while Ports 4 and 5 should be sealed, Fig. 30.
Above the switching point, Port 1 should be connected to Port 5, Port 2 should be connected to Port 6, and Port 3 should be connected to Port 4.
