Mike's Workshop Manuals
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Buick
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1979
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Skyhawk Base, Automatic Trans
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Repair and Diagnosis
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General Information
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Basic Trouble Shooting
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Cooling System Trouble Shooting
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Condition & Possible Cause
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Engine Fails to Reach Normal Operating Temperature
Engine Fails to Reach Normal Operating Temperature
Thermostat stuck in open position.
Temperature gauge or light may be defective.
Faulty temperature sending unit.