Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Early Fuel Evaporation ( EFE ): Service and Repair
Vacuum Servo Type
COOLANT TEMPERATURE THERMAL VACUUM SWITCH (TVS), REPLACE
V6 & V8 Engines
1.
Drain coolant until coolant level is below engine coolant outlet housing.
2.
Disconnect hoses from TVS ports.
3.
Remove TVS.
4.
Reverse procedure to install. Torque TVS to 120 inch lbs.
V6 & V8 Engines
1.
Remove crossover exhaust pipe.
2.
Disconnect actuator rod from valve.
3.
Remove valve from exhaust pipe.
4.
Reverse procedure to install.
