How to replace a coolant level sensor, 2000 buick century

Question 1

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Low coolant light comes on when rad and reserve are full

There's a sensor in the reservoir, it's probably bad. The Coolant Level Sensor is replaceable and should be available at your local parts store, or at RockAuto,com for around $36.00.

Oct 18, 2015 • 2000 Buick Century

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Engine coolant light stays on

Check your coolant reservoir it maybe low on coolant.If its not then the coolant temperature sensor could be faulty.

Oct 25, 2012 • 2000 Buick Century

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Back window won't stay up heater and air fan won't run at two of the lowest speeds low coolant light always on

You need a window regulator for the back door., a fan speed relay for the blower, clean or replace the coolant level sensor.

Feb 11, 2011 • 2002 Buick Century

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Low coolant light blinks and it seems that there is enough coolant

There is a coolant level sensor either in the coolant tank reservoir or attached to the radiator that is malfunctioning. If coolant level is ok then most likely the sensor is going bad.

Nov 22, 2010 • 2000 Buick Century

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Low coolant light comes on and stays on. Engine runs at normal temp,coolant level is OK and antifreeze mix is 50/50.Wha'ts the problem? Thanks.

The sensor in the coolant tank has gone bad. It's the module mounted on the plastic overflow tank - with two wires running to it. You can purchase a new one at any auto parts store and install it in less than a minute, or you can just disconnect it.

Bill B

Sep 13, 2010 • 2000 Buick Century

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On a 2002 Buick Century with 3.1 liter motor. "service engine soon" light remains lit. Last week it was the "low coolant" Light that stayed lit. Had a new coolant sensor installed and problem still...

No you need to have the vehicle scanned for the check engine light to see what the code is that has it on. Autozone will do this for free.

May 17, 2010 • 2002 Buick Century

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Low coolant light stays lit when coolant isn't low. Intake manifold gasket was just changed and coolant light lit up on startup. Coolant level is topped up and no leaks.

reset the computer, if no change, replace the coolant sensor, but after reset it should work

Mar 15, 2010 • 2002 Buick Century

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2000 buick century, where is the thermostat located. and what level should the antifreeze be? the temp guage on dash is staying on the c side what may be the problem?

The thermostat is in a housing on the engine. It's located where the lower radiator hose attaches to the engine. The coolant level should be right near the top of the radiator when you remove the cap, and the overflow canister should be filled to the indicated line (there are markings on the canister). If your gauge stays on cold, you may have a faulty coolant temperature sensor. If it will get to normal operating temperature while sitting still, but starts cooling down when you drive, you have a thermostat failure - it's stuck open, and will need replacement.

Dec 11, 2009 • 2000 Buick Century

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Buick 1999 century replaced the sensor light and still comes on.

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.

Feb 06, 2009 • 1999 Buick Century

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