Firebird V8-305 5.0L (1982)
Thermal Vacuum Valve: Testing and Inspection
EGR Canister Purge TVS (EGR-CP-TVS)
Below the switching point;
-
Ports 1 and 2 should be blocked
-
No ported vacuum should be directed to the canister and EGR valve.
Above the switching point;
-
Ports 1 and 2 should be open, allowing ported vacuum to be directed to the canister and EGR valve. Replace valve, if defective.
NOTE: Refer to the number stamped on the base of the switch or valve for calibrated switching or activation temperatures.
