4000,S L4-1715cc 1.7L SOHC (WT) (1982)
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Thermal Vacuum Valve: Testing and Inspection
1.
Remove the vacuum hose from the angled connector (vacuum source) of the thermo-vacuum switch.
2.
Remove the vacuum hose from the EGR valve.
3.
Blow through the hose. The hose should be:
Open with coolant temperature below 45°C (113°F)
Closed above 61°C (142°F)
NOTE: If necessary, remove the thermo vacuum switch and heat or cool down with water to test.
