Question about 2002 Buick Century

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My buick century 2002 is overheating why

No heat this am so i drain rad./overflow tank and added coolant now car is overheating why

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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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

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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

csmock132
  • 4669 Answers

SOURCE: Low Coolant light flashing on 1996 Buick Regal 3.8

The low coolant sensor should be located in the passenger side radiator tank, You need to take it out and clean the sludge off of it for it to work right. Or you can just unplug it and forget about it, the light will go out and it won't cause any problems.

Posted on Mar 01, 2009

shop242
  • 214 Answers

SOURCE: '97 Buick Century Overheating Problem

Yes Ma'am, Have a pressure check done on the coolant system and I'll be willing to bet you have a blown lower intake gasket.. Pls let me know..

Posted on Mar 11, 2009

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1 Answer

Low coolant light stays on until system heats


Your overflow tank(aka coolant recovery reservoir) is low on coolant. The coolant expands when warm and raises the level in the tank, which turns off your light. Top off the reservoir (when cool) to the "Full Cold" line. If you have to keep adding on a regular basis, then you have a leak somewhere in your cooling system, could even be the reservoir itself.

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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

1 Answer

Why is my buick century coolant light always on


You may want to check your manual. There is usually a light to tell you the coolant level in your reserve or overflow tank is low, and there is another light to tell you the system is overheating due to not enough coolant in the entire system. Nonetheless if either light remains on and you have refilled the overflow/reserve tank it is time to look for a leak. Leaks can be at hoses, in gaskets, and other locations. A puddle on the floor where the car is usually parked can help you locate a cracked hose or loose clamp, an antifreeze smell in your exhaust can help you locate a much worse problem.Often you may detect an antifreeze smell only after the car is warmed up which can be a leak which is running onto an exhaust pipe.

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2 Answers

1999 buick centry overheating overflowing the overflow


Until you get it figured out use regular water. Replace thermostat and radiator/coolant tank caps. Thermostat regulates pressure in the motor and allows radiator to cool. Caps regulate atmosperic pressure. Either or both being bad will cause you system to siphon and fail.

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drain plug is at the bottom of the rad
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Yes Ma'am, Have a pressure check done on the coolant system and I'll be willing to bet you have a blown lower intake gasket.. Pls let me know..

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2 Answers

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The coolant container (called the overflow reservoir) will be marked as to what constitutes MIN and MAX levels that should be in it. If it's low, add coolant.

As for what temperature it should run at, the gauge on the dash is just a general indication, but usually it runs close to the middle of the gauge's range.

Aug 08, 2008 | 2004 Chevrolet Impala

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