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If you replace the thermostat on a 98 Pontiac Sunfire and it still leaks coolant what else could be the problem?
Wiki User
∙ 16y ago
Leaking hose?
Defective thermostat housing or bad thermostat gasket?
Bad water pump or gasket?
Leak in radiator?
Leak at heater core?
Leak at head gasket?
Coolant recovery tank?
Wiki User
∙ 16y ago
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