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Home >> Isuzu >> 1981 >> I-Mark LS, 1.8L Eng VIN P, Automatic Trans >> Repair and Diagnosis >> Engine Performance >> Fuel Delivery >> 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.