Bronco V8-351 5.8L VIN G 2-bbl (1982)
Thermal Vacuum Valve: Testing and Inspection
Temperature Vacuum Switch (TVS)
1982-83
1.
Apply 16 inches Hg to motor side of valve and trap. Cool to test temperature. Switch should hold vacuum as follows:
a. White TVS--normally open. At 40° F must hold 5 inches Hg for 30 seconds. Should not hold vacuum above 80° F.
b. Brown TVS--normally open. At 5° F must hold 5 inches Hg for 30 seconds. Should not hold vacuum above 40° F.
c. Purple TVS--normally open. At 30° F must hold 5 inches for 30 seconds. Should not hold vacuum above 60° F.
d. Red TVS--normally closed. At 80° F or higher must hold 5 inches Hg for 30 seconds. Should not hold vacuum below 40° F.