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Home >> Jeep >> 1990 >> Wrangler Islander, 2.5 E >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests - CARBURETED >> Coolant Temperature Switch
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Coolant Temperature Switch

Switch is located at rear of cylinder head. Disconnect switch connector. When coolant temperature is less than 135°F (57°C), switch is open. At higher temperatures, switch should have continuity to ground.