Question about 2002 Buick Century

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Oil droplets in engine coolant. Mileage about 100000 on 2002 V6 Buick Century.

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  • 343 Answers

Replace the head gasket. Don't wait any longer if you can or the engine may overheat and warp the head.

Posted on Jun 01, 2010

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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

What grade of oil does the 3100 v6 engine take


Any good oil will work. newer engines use 5-30 for better gas mileage. Your car may have 100K miles so I would use 10-30 or 20-30 if you can find it. Change the oil and filter every 3000-4000 miles and the engine will last a long time.

May 12, 2014 | 1994 Buick Century

1 Answer

The temperature light on my 1986 buick century goes on as soon as I start the car. I topped off the oil and coolant is fine. What could be causing this?


Sounds like a faulty coolant sensor. Best fix is to replace a faulty coolant sensor will cause poor gas mileage and in some cases cooling fans will not work which could cause overheating.

Nov 12, 2013 | Cars & Trucks

1 Answer

Oil in coolant


Sorry, this is evidence of a blow head gasket. If this is the 3.1L v6 engine, that can happen if the car runs hot. Sorry, this is not an easy DIY repair. Hope this helps Fix Ya up.

Jul 06, 2011 | 2000 Buick Century

2 Answers

My 1995 buick century 4 door v6 3.1 is over


You need to change the "Coolant Temperature Sensor". That usually controls the fan. If the fan does not run, you will overheat.

Jul 28, 2010 | 1995 Buick Century

1 Answer

Where are the temperature sending units located in a 1992 Buick Century


On the 2.5 4cyl. The temp. sensor is located on the
transmission side of the engine below the coolant outlet. The temp sending unit is in the head in front of
the coolant outlet. On the 3.3 v6 the temp sensor is on the right side of the engine below the alternator.
The temp sending unit is to the left of the sensor.
Hope this helps.

Mar 18, 2010 | 1992 Buick Century

1 Answer

How do I remove the oil pan on my 1991 Buick Century with a 3.3 V6 engine.


if theres a cross bar the engine will need to be removed.
if not just remove all the bolts around the oilpan and remove it.

Jun 12, 2009 | 1991 Buick Century

2 Answers

1999 buick century 3.0 v6 engine cooling fan not turning on soon enough allowing the engine to run hot. Is this a sensor control problem that is an easy replacement?


u need to buy the special coolant to your car i have the same car whit the same problem and is cause to the incorrent cooland the cooland to your car is the  DEX-COOL  if u dont find that u need some hit       (silicate-free) 

Apr 29, 2009 | 1999 Buick Century

3 Answers

Coolant temp sensor


BELOW THE THERMOSTAT HOUSING ON DRIVERS SIDE OF ENGINE

Apr 16, 2009 | 1994 Buick Century

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