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Re: 1999 buick century
Is there coolant in the system ? if there is go to the coolant bottle there is a sensor in the bottom of that bottle if there is any thing beside coolant in that bottle it will cause the sensor to act erraticly. if there is no coolant our low coolant then the sensor is working you need to look for a leak
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Yes, this is very important maintenance procedures. Transmission should be serviced (filter, oil, and oil pan gasket replaced) @ 60K miles, plugs at 100K miles (I'd replace them early for better gas mileage), and radiator flushed @ 60K miles. Hopefully this helps!!
your buick century has a low coolant level sensor located in the passenger side of the radiator , sometiomes the sensor get covered with coolant sludge and will show that the cooling system is not filled , sometime the radiator is just still low on coolant . check the radiator when the engine is cold ( IF HOT WAIT !!! 30 mins ) and make sure the level is above the sensor.