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Ford
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1988
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F 350 2WD Pickup V8-351 5.8L
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Repair and Diagnosis
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Engine, Cooling and Exhaust
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Cooling System
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Testing and Inspection
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Symptom Related Diagnostic Procedures
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Engine Does Not Reach Normal Operating Temperature
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B2 - Thermostat
B2 - Thermostat
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Remove and test thermostat.
^
Does the thermostat pass the tests?
YES --
Release vehicle to customer.
NO --
Replace the thermostat. Go to B0.
B0 - Temperature Check