911 Carrera Targa F6-3164cc 3.2L (1985)
Thermal Vacuum Valve: Testing and Inspection
A .020 inch (.5 mm) 3 ohm resistance wire is integral with thermo valve lead wire.
1.
Disconnect vacuum hose from thermo valve T-fitting.
2.
Using mouth, blow air into disconnected thermo valve vacuum hose.
3.
Thermo valve should be closed when engine is warm, and opened when ambient temperature is below 68° F.
4.
If valve does not perform as outlined above, replace it.
