Firebird V8-305 5.0L (1982)
Distributor Thermal Vacuum Switch: Testing and Inspection
EGR-EFE-EMR-DTVS
Fig. 38a - EGR EFE EMR Thermal Vacuum Switch
Below the switching point;
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Ports 1 and 2 and 3 and 6 should be connected
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Ports 4 and 5 should be sealed--Fig 38A.
Above the switching point;
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Port 1 should be connected to Port 5
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Port 2 should be connected to Port 6
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Port 3 should be connected to Port 4.
NOTE: Refer to the number stamped on the base of the switch or valve for calibrated switching or activation temperatures.
