Operation CHARM
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Pontiac
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1988
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J2000/Sunbird L4-121 2.0L
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Repair and Diagnosis
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Port Fuel Injection Models
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Function Selector Positions
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Coolant Temperature
Coolant Temperature
This position displays engine coolant temperature in degrees Centigrade. Can be used to detect malfunctions in the coolant temperature circuit if readings are not consistent with engine operation.