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How much coolant should my 99 buick century with a 3100 engine hold?

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13.6 qts or roughly 3 1/2 gallons. I hope this helps!

Posted on Oct 06, 2010


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What causes 02 buick century that not running hot to show the guage hot and the fan running and temp light to show

1 How do you know it is not running hot? Engines run normally at close to 90 deg. C, that is, close to the boiling point of water. The pressure cap on the radiator ensures that the water does not steam off at this temperature.
2 If the engine is not running hot and the gauge shows that it does, the gauge is faulty, probably the sender unit. I am not sure of the Buick, but some cars have two senders, one for the gauge on the dash and the other for the radiator fan. If your car has only one, the information from the sender is probably used by the ecu to switch on the fan, so if the sender is faulty you will get the symptoms you describe.

Feb 10, 2015 | Buick Cars & Trucks

3 Answers

How to find cause of valves tapping on 2003 buick century with a 3100 V-6 engine

the reason of tapping could be:
a) a low quality gasoline with low octane rating below 98/95
b) wrong adjustment of carburetor
c) valves need adjustment
d) high mileage on the engine 25309254-wutfveiel3ypko01ydor435x-4-0.jpg

Dec 06, 2014 | 2003 Buick Century

1 Answer

How to bleed cooling system on a 3100 Buick Century?

If there is a bleed valve near the upper radiator hose, you can use that.
If not, you would have to run the engine with the cap loose until the thermostat opens to let the air escape.

Sep 23, 2012 | 2003 Buick Century

2 Answers

How to bleed air from cooling system 2001 buick century

there is a small bolt on the black pipe above the water pump housing, you turn it and the antifreeze will start to come out, just snug it do not over tighten, they snap off easily. some 3100 engines have a bleeder on the thermostat housing (follow top radiator hose)

Sep 04, 2012 | 2001 Buick Century

1 Answer

Coolant in topped off. engine does not go over half way on temp gauge. low fluid level light keeps blinking. what is the problem. 1998 buick century

The sending unit for the coolant is bad. Your I believe is on the passenger side mounted it the radiator about 10" down. It is square. There is a clip that holds it in. remove it and pull the unit out and shove the other one in. Coolant will come out, so do it when it cold.

Aug 19, 2011 | 1998 Buick Century

1 Answer

Hi I kneed the torque spec'a and sequence for the head's on 3100 searies 1999 buick century engine and the plenum thanks

how to find out the torque spec for 1998 buick century 3100engine.i just did a intake gasket switch and i had to loosen the valves to get the gasket out now i need to know what the spec is.

Dec 30, 2009 | 1999 Buick Century

1 Answer

How do I replace the coolant temp sensor?

if the engine is a 3100 it's at the back of the intake below the throttle body
if it's a 3800 then it's below the thermostat housing

Nov 05, 2009 | 2001 Buick Century

1 Answer

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.

Dec 20, 2008 | 2000 Buick Century

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