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2002 Buick Century Problems

Low coolant sensor

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

leetamara
  • 702 Answers

SOURCE: low coolant light

In the surge tank, there is a sensor that detects the level of the coolant. It's most likely the sensor is stuck on the low position. All this sensor does is slide up and down as the coolant level goes up and down. You can tap the side of the surge tank near where the sensor plugs in and see if it will dislodge. You'll see the 2 wire plug at the bottom of the tank towards the front.

Posted on Jun 13, 2008

jeffk14
  • 16 Answers

SOURCE: how to replace a coolant level sensor, 2000 buick century

TRY THIS. Good luck!

Posted on Nov 22, 2008

Papa Chan
  • 56 Answers

SOURCE: how to replace a coolant level sensor, 2000 buick century

The coolant level sensor is located on the radiator. If you are looking at the engine from the front of the car it will be on the left side. There will some kind of clip holding it in the radiator. Removed the clip and pull the sensor out. You will lose coolant so try to swap it out quick or drain some of the coolant out. Once new sensor is installed, install clip to keep the sensor in place and reconnect the wires to the sensor. Crank the engine and make sure the coolant level is full. This should correct your problem.

Posted on Jan 04, 2009

  • 1986 Answers

SOURCE: Low coolant sensor on a 1998 buick

The coolant sensor should be located near where the upper radiator hose is attached to the engine and has a wire connector on it with 2 wires. It's the only sensor near there. Then there's the sensor that'll be attached to your reservoir tank somewhere along the firewall

Posted on Sep 16, 2009

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ftw1952
  • 10319 Answers

SOURCE: low coolant light stays on.

A relay does run the sensor as well

Posted on Jan 15, 2010

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1 Answer

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

1 Answer

The low coolant light is always on in my 2002 Buick Century. The rad was flushed as well as the overflow container and the coolant level never drops. The needle of temperature gage is always at the mid...


if the sensor was changed, the wiring to the sensor has to have a break in it somewhere. check for power and ground at your connector, and start tracing back to find the break. good luck!

Oct 25, 2010 | 2002 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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I have a 2002 century buick and the low coolent light was on so I went to go get pre-mixed anti freeze that is sopose to be good for all cars.However the light is still on. If I put the wrong kind in how...


Hello jameli_noman: My name is Roger and I will help you. The radiator has a sensor in it that is supposed to since low coolant. A couple of things can cause a problem. 1. The sensor is working and coolant is low. 2. Coolant sensor is defective. 3. Coolant sensor is contaminated by oil deposits. I would look at #3. If you were low on coolant? The coolant had to of gone somewhere. Look close at the corners of the intake manifold. Where the intake meets the cylinder heads. If you see what looks like a slimy oozy build up and you should see traces of coolant in this mess. You have a intake gasket causing the problem. This leak will let minute amounts of oil into the coolant system. This will cause the sensor to be contaminated. You can disconnect the sensor. But this defeats the early warning of low coolant and engine damage. Should you have any more questions please just ask. I will reply. Please rate the answer as this way I know it was of use. Thank You for using Fix Ya. Roger

Mar 05, 2010 | 2002 Buick Century

4 Answers

Low coolant light stays on.


A relay does run the sensor as well

Jan 15, 2010 | 2002 Buick Century

1 Answer

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

1 Answer

2002 buick century low coolant lite on


make sure youre using dex cool

Nov 05, 2008 | 2002 Buick Century

1 Answer

Low coolant light


In the surge tank, there is a sensor that detects the level of the coolant. It's most likely the sensor is stuck on the low position. All this sensor does is slide up and down as the coolant level goes up and down. You can tap the side of the surge tank near where the sensor plugs in and see if it will dislodge. You'll see the 2 wire plug at the bottom of the tank towards the front.

Jun 13, 2008 | 1992 Buick Century

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