Question about 1998 Buick Century
Can't figure this out! Have flushed radiator and replaced with new coolant. Sporadic over-heating, usually in Winter. Added stop leak since fluid was continually low, does not seem to accept coolant from resevoir. Blows cold air until gauge is far too high and then comes back down to mid-range. Will change thermostat and hope for the best! Any suggestions on problem or BEST way to change thermostat as I've had problems with bolts stripping in the past. Thanks a million!!
Be sure to have heater (not defrost) on when refilling rad with coolant, and leave cap off until rad fan has come on & off 2 or 3 times, then replace cap. Airlocks are common on vehicles cooling systems, and will cause symptoms you are describing.
Posted on Jan 24, 2009
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Posted on Jan 02, 2017
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