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Home >> Chevrolet >> 1981 >> Luv 2.2L Eng VIN S, Automatic Trans >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Diesel Fuel Injection >> Testing >> Glow Plug System >> Thermal Switch

Thermal Switch

Continuity should exist when switch is at a temperature lower than 109-122° F (43-50° C). No continuity should exist when above 116-127° F (47-53° C). If switch does not operate properly, replace it.